Home / 129,339.56-178,461.81-75,614.15

Finding the Fourth Proportional to 129,339.56, 178,461.81 and 75,614.15

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Solution

The fourth proportional to 129,339.56, 178,461.81 and 75,614.15 is: 104,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,339.56 : 178,461.81 = 75,614.15 : x
  2. Step 2: Convert to fraction form
    129,339.56/178,461.81 = 75,614.15/x
  3. Step 3: Cross multiply
    129,339.56x = 178,461.81 × 75,614.15
  4. Step 4: Simplify right side
    129,339.56x = 13,494,238,070.61
  5. Step 5: Solve for x
    x = 13,494,238,070.61/129,339.56
  6. Step 6: Final answer
    x = 104,331.87

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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.