Home / 156,000.28-215,261.85-88,013.28

Finding the Fourth Proportional to 156,000.28, 215,261.85 and 88,013.28

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Solution

The fourth proportional to 156,000.28, 215,261.85 and 88,013.28 is: 121,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,000.28 : 215,261.85 = 88,013.28 : x
  2. Step 2: Convert to fraction form
    156,000.28/215,261.85 = 88,013.28/x
  3. Step 3: Cross multiply
    156,000.28x = 215,261.85 × 88,013.28
  4. Step 4: Simplify right side
    156,000.28x = 18,945,902,614.65
  5. Step 5: Solve for x
    x = 18,945,902,614.65/156,000.28
  6. Step 6: Final answer
    x = 121,447.88

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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.