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Finding the Fourth Proportional to 159,701.92, 220,398.72 and 91,740.16

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Solution

The fourth proportional to 159,701.92, 220,398.72 and 91,740.16 is: 126,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,701.92 : 220,398.72 = 91,740.16 : x
  2. Step 2: Convert to fraction form
    159,701.92/220,398.72 = 91,740.16/x
  3. Step 3: Cross multiply
    159,701.92x = 220,398.72 × 91,740.16
  4. Step 4: Simplify right side
    159,701.92x = 20,219,413,836.60
  5. Step 5: Solve for x
    x = 20,219,413,836.60/159,701.92
  6. Step 6: Final answer
    x = 126,607.21

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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.