Home / 81,192,628.70-121,788,943.05-63,973,940.30

Finding the Fourth Proportional to 81,192,628.70, 121,788,943.05 and 63,973,940.30

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Solution

The fourth proportional to 81,192,628.70, 121,788,943.05 and 63,973,940.30 is: 95,960,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,628.70 : 121,788,943.05 = 63,973,940.30 : x
  2. Step 2: Convert to fraction form
    81,192,628.70/121,788,943.05 = 63,973,940.30/x
  3. Step 3: Cross multiply
    81,192,628.70x = 121,788,943.05 × 63,973,940.30
  4. Step 4: Simplify right side
    81,192,628.70x = 7,791,318,571,880,799
  5. Step 5: Solve for x
    x = 7,791,318,571,880,799/81,192,628.70
  6. Step 6: Final answer
    x = 95,960,910.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.