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Finding the Fourth Proportional to 131,729.88, 181,787.72 and 71,301.32

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Solution

The fourth proportional to 131,729.88, 181,787.72 and 71,301.32 is: 98,396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,729.88 : 181,787.72 = 71,301.32 : x
  2. Step 2: Convert to fraction form
    131,729.88/181,787.72 = 71,301.32/x
  3. Step 3: Cross multiply
    131,729.88x = 181,787.72 × 71,301.32
  4. Step 4: Simplify right side
    131,729.88x = 12,961,704,395.79
  5. Step 5: Solve for x
    x = 12,961,704,395.79/131,729.88
  6. Step 6: Final answer
    x = 98,396.08

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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.