Home / 129,369.30-178,524.99-72,006.72

Finding the Fourth Proportional to 129,369.30, 178,524.99 and 72,006.72

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Solution

The fourth proportional to 129,369.30, 178,524.99 and 72,006.72 is: 99,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.30 : 178,524.99 = 72,006.72 : x
  2. Step 2: Convert to fraction form
    129,369.30/178,524.99 = 72,006.72/x
  3. Step 3: Cross multiply
    129,369.30x = 178,524.99 × 72,006.72
  4. Step 4: Simplify right side
    129,369.30x = 12,854,998,967.93
  5. Step 5: Solve for x
    x = 12,854,998,967.93/129,369.30
  6. Step 6: Final answer
    x = 99,366.69

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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.