Home / 129,314.40-193,773.12-87,037.92

Finding the Fourth Proportional to 129,314.40, 193,773.12 and 87,037.92

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Solution

The fourth proportional to 129,314.40, 193,773.12 and 87,037.92 is: 130,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,314.40 : 193,773.12 = 87,037.92 : x
  2. Step 2: Convert to fraction form
    129,314.40/193,773.12 = 87,037.92/x
  3. Step 3: Cross multiply
    129,314.40x = 193,773.12 × 87,037.92
  4. Step 4: Simplify right side
    129,314.40x = 16,865,609,316.71
  5. Step 5: Solve for x
    x = 16,865,609,316.71/129,314.40
  6. Step 6: Final answer
    x = 130,423.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.