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Finding the Fourth Proportional to 138,151.80, 207,337.05 and 53,952.30

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Solution

The fourth proportional to 138,151.80, 207,337.05 and 53,952.30 is: 80,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,151.80 : 207,337.05 = 53,952.30 : x
  2. Step 2: Convert to fraction form
    138,151.80/207,337.05 = 53,952.30/x
  3. Step 3: Cross multiply
    138,151.80x = 207,337.05 × 53,952.30
  4. Step 4: Simplify right side
    138,151.80x = 11,186,310,722.72
  5. Step 5: Solve for x
    x = 11,186,310,722.72/138,151.80
  6. Step 6: Final answer
    x = 80,971.15

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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.