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Finding the Fourth Proportional to 156,722.70, 216,277.32 and 89,654.70

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Solution

The fourth proportional to 156,722.70, 216,277.32 and 89,654.70 is: 123,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,722.70 : 216,277.32 = 89,654.70 : x
  2. Step 2: Convert to fraction form
    156,722.70/216,277.32 = 89,654.70/x
  3. Step 3: Cross multiply
    156,722.70x = 216,277.32 × 89,654.70
  4. Step 4: Simplify right side
    156,722.70x = 19,390,278,241.40
  5. Step 5: Solve for x
    x = 19,390,278,241.40/156,722.70
  6. Step 6: Final answer
    x = 123,723.48

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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.