Home / 156,487.76-215,951.60-84,869.36

Finding the Fourth Proportional to 156,487.76, 215,951.60 and 84,869.36

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Solution

The fourth proportional to 156,487.76, 215,951.60 and 84,869.36 is: 117,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,487.76 : 215,951.60 = 84,869.36 : x
  2. Step 2: Convert to fraction form
    156,487.76/215,951.60 = 84,869.36/x
  3. Step 3: Cross multiply
    156,487.76x = 215,951.60 × 84,869.36
  4. Step 4: Simplify right side
    156,487.76x = 18,327,674,082.98
  5. Step 5: Solve for x
    x = 18,327,674,082.98/156,487.76
  6. Step 6: Final answer
    x = 117,118.90

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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.