Home / 81,347.28-112,201.38-74,654.52

Finding the Fourth Proportional to 81,347.28, 112,201.38 and 74,654.52

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Solution

The fourth proportional to 81,347.28, 112,201.38 and 74,654.52 is: 102,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,347.28 : 112,201.38 = 74,654.52 : x
  2. Step 2: Convert to fraction form
    81,347.28/112,201.38 = 74,654.52/x
  3. Step 3: Cross multiply
    81,347.28x = 112,201.38 × 74,654.52
  4. Step 4: Simplify right side
    81,347.28x = 8,376,340,167.24
  5. Step 5: Solve for x
    x = 8,376,340,167.24/81,347.28
  6. Step 6: Final answer
    x = 102,970.13

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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.