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Finding the Fourth Proportional to 159,772.13, 220,505.07 and 91,788.98

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Solution

The fourth proportional to 159,772.13, 220,505.07 and 91,788.98 is: 126,680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,772.13 : 220,505.07 = 91,788.98 : x
  2. Step 2: Convert to fraction form
    159,772.13/220,505.07 = 91,788.98/x
  3. Step 3: Cross multiply
    159,772.13x = 220,505.07 × 91,788.98
  4. Step 4: Simplify right side
    159,772.13x = 20,239,935,184.50
  5. Step 5: Solve for x
    x = 20,239,935,184.50/159,772.13
  6. Step 6: Final answer
    x = 126,680.01

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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.