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Finding the Fourth Proportional to 130,158.78, 179,634.87 and 73,569.66

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Solution

The fourth proportional to 130,158.78, 179,634.87 and 73,569.66 is: 101,535.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,158.78 : 179,634.87 = 73,569.66 : x
  2. Step 2: Convert to fraction form
    130,158.78/179,634.87 = 73,569.66/x
  3. Step 3: Cross multiply
    130,158.78x = 179,634.87 × 73,569.66
  4. Step 4: Simplify right side
    130,158.78x = 13,215,676,310.04
  5. Step 5: Solve for x
    x = 13,215,676,310.04/130,158.78
  6. Step 6: Final answer
    x = 101,535.04

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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.