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Finding the Fourth Proportional to 101,666.52, 140,229.56 and 69,780.06

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Solution

The fourth proportional to 101,666.52, 140,229.56 and 69,780.06 is: 96,248.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,666.52 : 140,229.56 = 69,780.06 : x
  2. Step 2: Convert to fraction form
    101,666.52/140,229.56 = 69,780.06/x
  3. Step 3: Cross multiply
    101,666.52x = 140,229.56 × 69,780.06
  4. Step 4: Simplify right side
    101,666.52x = 9,785,227,110.57
  5. Step 5: Solve for x
    x = 9,785,227,110.57/101,666.52
  6. Step 6: Final answer
    x = 96,248.27

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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.