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Finding the Fourth Proportional to 115,377.92, 172,931.08 and 52,124.16

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Solution

The fourth proportional to 115,377.92, 172,931.08 and 52,124.16 is: 78,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,377.92 : 172,931.08 = 52,124.16 : x
  2. Step 2: Convert to fraction form
    115,377.92/172,931.08 = 52,124.16/x
  3. Step 3: Cross multiply
    115,377.92x = 172,931.08 × 52,124.16
  4. Step 4: Simplify right side
    115,377.92x = 9,013,887,282.89
  5. Step 5: Solve for x
    x = 9,013,887,282.89/115,377.92
  6. Step 6: Final answer
    x = 78,124.89

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1.5x scale

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.