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Finding the Fourth Proportional to 250,068.16, 345,081.12 and 136,869.44

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Solution

The fourth proportional to 250,068.16, 345,081.12 and 136,869.44 is: 188,872.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,068.16 : 345,081.12 = 136,869.44 : x
  2. Step 2: Convert to fraction form
    250,068.16/345,081.12 = 136,869.44/x
  3. Step 3: Cross multiply
    250,068.16x = 345,081.12 × 136,869.44
  4. Step 4: Simplify right side
    250,068.16x = 47,231,059,648.97
  5. Step 5: Solve for x
    x = 47,231,059,648.97/250,068.16
  6. Step 6: Final answer
    x = 188,872.74

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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.