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Finding the Fourth Proportional to 159,859.80, 220,613.85 and 91,898.76

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Solution

The fourth proportional to 159,859.80, 220,613.85 and 91,898.76 is: 126,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,859.80 : 220,613.85 = 91,898.76 : x
  2. Step 2: Convert to fraction form
    159,859.80/220,613.85 = 91,898.76/x
  3. Step 3: Cross multiply
    159,859.80x = 220,613.85 × 91,898.76
  4. Step 4: Simplify right side
    159,859.80x = 20,274,139,253.83
  5. Step 5: Solve for x
    x = 20,274,139,253.83/159,859.80
  6. Step 6: Final answer
    x = 126,824.50

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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.