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Finding the Fourth Proportional to 172,292.70, 237,729.09 and 100,658.90

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Solution

The fourth proportional to 172,292.70, 237,729.09 and 100,658.90 is: 138,888.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,292.70 : 237,729.09 = 100,658.90 : x
  2. Step 2: Convert to fraction form
    172,292.70/237,729.09 = 100,658.90/x
  3. Step 3: Cross multiply
    172,292.70x = 237,729.09 × 100,658.90
  4. Step 4: Simplify right side
    172,292.70x = 23,929,547,508.76
  5. Step 5: Solve for x
    x = 23,929,547,508.76/172,292.70
  6. Step 6: Final answer
    x = 138,888.92

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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.