Home / 81,275.41-111,910.84-71,147.17

Finding the Fourth Proportional to 81,275.41, 111,910.84 and 71,147.17

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Solution

The fourth proportional to 81,275.41, 111,910.84 and 71,147.17 is: 97,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,275.41 : 111,910.84 = 71,147.17 : x
  2. Step 2: Convert to fraction form
    81,275.41/111,910.84 = 71,147.17/x
  3. Step 3: Cross multiply
    81,275.41x = 111,910.84 × 71,147.17
  4. Step 4: Simplify right side
    81,275.41x = 7,962,139,558.32
  5. Step 5: Solve for x
    x = 7,962,139,558.32/81,275.41
  6. Step 6: Final answer
    x = 97,964.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.