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Finding the Fourth Proportional to 101,316.38, 139,825.24 and 56,613.02

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Solution

The fourth proportional to 101,316.38, 139,825.24 and 56,613.02 is: 78,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,316.38 : 139,825.24 = 56,613.02 : x
  2. Step 2: Convert to fraction form
    101,316.38/139,825.24 = 56,613.02/x
  3. Step 3: Cross multiply
    101,316.38x = 139,825.24 × 56,613.02
  4. Step 4: Simplify right side
    101,316.38x = 7,915,928,267.97
  5. Step 5: Solve for x
    x = 7,915,928,267.97/101,316.38
  6. Step 6: Final answer
    x = 78,130.79

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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.