Home / 81,192,653.20-121,788,979.80-63,973,964.80

Finding the Fourth Proportional to 81,192,653.20, 121,788,979.80 and 63,973,964.80

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Solution

The fourth proportional to 81,192,653.20, 121,788,979.80 and 63,973,964.80 is: 95,960,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,653.20 : 121,788,979.80 = 63,973,964.80 : x
  2. Step 2: Convert to fraction form
    81,192,653.20/121,788,979.80 = 63,973,964.80/x
  3. Step 3: Cross multiply
    81,192,653.20x = 121,788,979.80 × 63,973,964.80
  4. Step 4: Simplify right side
    81,192,653.20x = 7,791,323,906,753,110
  5. Step 5: Solve for x
    x = 7,791,323,906,753,110/81,192,653.20
  6. Step 6: Final answer
    x = 95,960,947.20

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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.