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Finding the Fourth Proportional to 159,792.55, 220,514.75 and 87,200.55

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Solution

The fourth proportional to 159,792.55, 220,514.75 and 87,200.55 is: 120,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,792.55 : 220,514.75 = 87,200.55 : x
  2. Step 2: Convert to fraction form
    159,792.55/220,514.75 = 87,200.55/x
  3. Step 3: Cross multiply
    159,792.55x = 220,514.75 × 87,200.55
  4. Step 4: Simplify right side
    159,792.55x = 19,229,007,864.61
  5. Step 5: Solve for x
    x = 19,229,007,864.61/159,792.55
  6. Step 6: Final answer
    x = 120,337.33

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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.