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Finding the Fourth Proportional to 144,878.70, 199,974.24 and 87,508.89

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Solution

The fourth proportional to 144,878.70, 199,974.24 and 87,508.89 is: 120,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,878.70 : 199,974.24 = 87,508.89 : x
  2. Step 2: Convert to fraction form
    144,878.70/199,974.24 = 87,508.89/x
  3. Step 3: Cross multiply
    144,878.70x = 199,974.24 × 87,508.89
  4. Step 4: Simplify right side
    144,878.70x = 17,499,523,770.99
  5. Step 5: Solve for x
    x = 17,499,523,770.99/144,878.70
  6. Step 6: Final answer
    x = 120,787.42

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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.