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Finding the Fourth Proportional to 154,572.60, 231,858.90 and 137,951.40

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Solution

The fourth proportional to 154,572.60, 231,858.90 and 137,951.40 is: 206,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,572.60 : 231,858.90 = 137,951.40 : x
  2. Step 2: Convert to fraction form
    154,572.60/231,858.90 = 137,951.40/x
  3. Step 3: Cross multiply
    154,572.60x = 231,858.90 × 137,951.40
  4. Step 4: Simplify right side
    154,572.60x = 31,985,259,857.46
  5. Step 5: Solve for x
    x = 31,985,259,857.46/154,572.60
  6. Step 6: Final answer
    x = 206,927.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.