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Finding the Fourth Proportional to 159,793.70, 220,489.62 and 90,875.89

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Solution

The fourth proportional to 159,793.70, 220,489.62 and 90,875.89 is: 125,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,793.70 : 220,489.62 = 90,875.89 : x
  2. Step 2: Convert to fraction form
    159,793.70/220,489.62 = 90,875.89/x
  3. Step 3: Cross multiply
    159,793.70x = 220,489.62 × 90,875.89
  4. Step 4: Simplify right side
    159,793.70x = 20,037,189,350.81
  5. Step 5: Solve for x
    x = 20,037,189,350.81/159,793.70
  6. Step 6: Final answer
    x = 125,394.11

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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.