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Finding the Fourth Proportional to 156,079.31, 215,390.16 and 88,099.16

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Solution

The fourth proportional to 156,079.31, 215,390.16 and 88,099.16 is: 121,577.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,079.31 : 215,390.16 = 88,099.16 : x
  2. Step 2: Convert to fraction form
    156,079.31/215,390.16 = 88,099.16/x
  3. Step 3: Cross multiply
    156,079.31x = 215,390.16 × 88,099.16
  4. Step 4: Simplify right side
    156,079.31x = 18,975,691,091.31
  5. Step 5: Solve for x
    x = 18,975,691,091.31/156,079.31
  6. Step 6: Final answer
    x = 121,577.24

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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.