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Finding the Fourth Proportional to 154,032.98, 231,081.87 and 87,503.90

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Solution

The fourth proportional to 154,032.98, 231,081.87 and 87,503.90 is: 131,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,032.98 : 231,081.87 = 87,503.90 : x
  2. Step 2: Convert to fraction form
    154,032.98/231,081.87 = 87,503.90/x
  3. Step 3: Cross multiply
    154,032.98x = 231,081.87 × 87,503.90
  4. Step 4: Simplify right side
    154,032.98x = 20,220,564,844.29
  5. Step 5: Solve for x
    x = 20,220,564,844.29/154,032.98
  6. Step 6: Final answer
    x = 131,274.26

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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.