Home / 129,233.42-178,350.28-72,648.44

Finding the Fourth Proportional to 129,233.42, 178,350.28 and 72,648.44

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Solution

The fourth proportional to 129,233.42, 178,350.28 and 72,648.44 is: 100,259.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,233.42 : 178,350.28 = 72,648.44 : x
  2. Step 2: Convert to fraction form
    129,233.42/178,350.28 = 72,648.44/x
  3. Step 3: Cross multiply
    129,233.42x = 178,350.28 × 72,648.44
  4. Step 4: Simplify right side
    129,233.42x = 12,956,868,542.19
  5. Step 5: Solve for x
    x = 12,956,868,542.19/129,233.42
  6. Step 6: Final answer
    x = 100,259.43

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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.