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Finding the Fourth Proportional to 156,373.10, 215,795.24 and 84,753.12

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Solution

The fourth proportional to 156,373.10, 215,795.24 and 84,753.12 is: 116,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,373.10 : 215,795.24 = 84,753.12 : x
  2. Step 2: Convert to fraction form
    156,373.10/215,795.24 = 84,753.12/x
  3. Step 3: Cross multiply
    156,373.10x = 215,795.24 × 84,753.12
  4. Step 4: Simplify right side
    156,373.10x = 18,289,319,871.15
  5. Step 5: Solve for x
    x = 18,289,319,871.15/156,373.10
  6. Step 6: Final answer
    x = 116,959.50

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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.