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Finding the Fourth Proportional to 101,357.68, 139,839.36 and 65,592.88

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Solution

The fourth proportional to 101,357.68, 139,839.36 and 65,592.88 is: 90,496.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,357.68 : 139,839.36 = 65,592.88 : x
  2. Step 2: Convert to fraction form
    101,357.68/139,839.36 = 65,592.88/x
  3. Step 3: Cross multiply
    101,357.68x = 139,839.36 × 65,592.88
  4. Step 4: Simplify right side
    101,357.68x = 9,172,466,359.76
  5. Step 5: Solve for x
    x = 9,172,466,359.76/101,357.68
  6. Step 6: Final answer
    x = 90,496.02

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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.