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Finding the Fourth Proportional to 101,275.64, 139,731.96 and 58,252.90

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Solution

The fourth proportional to 101,275.64, 139,731.96 and 58,252.90 is: 80,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,275.64 : 139,731.96 = 58,252.90 : x
  2. Step 2: Convert to fraction form
    101,275.64/139,731.96 = 58,252.90/x
  3. Step 3: Cross multiply
    101,275.64x = 139,731.96 × 58,252.90
  4. Step 4: Simplify right side
    101,275.64x = 8,139,791,761.80
  5. Step 5: Solve for x
    x = 8,139,791,761.80/101,275.64
  6. Step 6: Final answer
    x = 80,372.65

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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.