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Finding the Fourth Proportional to 156,722.75, 216,277.40 and 89,654.75

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Solution

The fourth proportional to 156,722.75, 216,277.40 and 89,654.75 is: 123,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,722.75 : 216,277.40 = 89,654.75 : x
  2. Step 2: Convert to fraction form
    156,722.75/216,277.40 = 89,654.75/x
  3. Step 3: Cross multiply
    156,722.75x = 216,277.40 × 89,654.75
  4. Step 4: Simplify right side
    156,722.75x = 19,390,296,227.65
  5. Step 5: Solve for x
    x = 19,390,296,227.65/156,722.75
  6. Step 6: Final answer
    x = 123,723.56

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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.