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Finding the Fourth Proportional to 130,793.75, 180,489.18 and 72,654.24

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Solution

The fourth proportional to 130,793.75, 180,489.18 and 72,654.24 is: 100,259.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,793.75 : 180,489.18 = 72,654.24 : x
  2. Step 2: Convert to fraction form
    130,793.75/180,489.18 = 72,654.24/x
  3. Step 3: Cross multiply
    130,793.75x = 180,489.18 × 72,654.24
  4. Step 4: Simplify right side
    130,793.75x = 13,113,304,201.12
  5. Step 5: Solve for x
    x = 13,113,304,201.12/130,793.75
  6. Step 6: Final answer
    x = 100,259.41

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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.