Home / 129,446.73-178,625.12-72,081.72

Finding the Fourth Proportional to 129,446.73, 178,625.12 and 72,081.72

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Solution

The fourth proportional to 129,446.73, 178,625.12 and 72,081.72 is: 99,466.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,446.73 : 178,625.12 = 72,081.72 : x
  2. Step 2: Convert to fraction form
    129,446.73/178,625.12 = 72,081.72/x
  3. Step 3: Cross multiply
    129,446.73x = 178,625.12 × 72,081.72
  4. Step 4: Simplify right side
    129,446.73x = 12,875,605,524.40
  5. Step 5: Solve for x
    x = 12,875,605,524.40/129,446.73
  6. Step 6: Final answer
    x = 99,466.44

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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.