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Finding the Fourth Proportional to 159,711.91, 220,401.54 and 88,091.77

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Solution

The fourth proportional to 159,711.91, 220,401.54 and 88,091.77 is: 121,566.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,711.91 : 220,401.54 = 88,091.77 : x
  2. Step 2: Convert to fraction form
    159,711.91/220,401.54 = 88,091.77/x
  3. Step 3: Cross multiply
    159,711.91x = 220,401.54 × 88,091.77
  4. Step 4: Simplify right side
    159,711.91x = 19,415,561,769.33
  5. Step 5: Solve for x
    x = 19,415,561,769.33/159,711.91
  6. Step 6: Final answer
    x = 121,566.15

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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.