Home / 129,302.16-178,439.40-75,591.76

Finding the Fourth Proportional to 129,302.16, 178,439.40 and 75,591.76

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Solution

The fourth proportional to 129,302.16, 178,439.40 and 75,591.76 is: 104,318.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.16 : 178,439.40 = 75,591.76 : x
  2. Step 2: Convert to fraction form
    129,302.16/178,439.40 = 75,591.76/x
  3. Step 3: Cross multiply
    129,302.16x = 178,439.40 × 75,591.76
  4. Step 4: Simplify right side
    129,302.16x = 13,488,548,299.34
  5. Step 5: Solve for x
    x = 13,488,548,299.34/129,302.16
  6. Step 6: Final answer
    x = 104,318.04

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1.5x scale

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.