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Finding the Fourth Proportional to 101,253.28, 139,671.12 and 60,939.04

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Solution

The fourth proportional to 101,253.28, 139,671.12 and 60,939.04 is: 84,060.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,253.28 : 139,671.12 = 60,939.04 : x
  2. Step 2: Convert to fraction form
    101,253.28/139,671.12 = 60,939.04/x
  3. Step 3: Cross multiply
    101,253.28x = 139,671.12 × 60,939.04
  4. Step 4: Simplify right side
    101,253.28x = 8,511,423,968.52
  5. Step 5: Solve for x
    x = 8,511,423,968.52/101,253.28
  6. Step 6: Final answer
    x = 84,060.72

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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.