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Finding the Fourth Proportional to 148,772.08, 205,310.20 and 81,704.08

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Solution

The fourth proportional to 148,772.08, 205,310.20 and 81,704.08 is: 112,754.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,772.08 : 205,310.20 = 81,704.08 : x
  2. Step 2: Convert to fraction form
    148,772.08/205,310.20 = 81,704.08/x
  3. Step 3: Cross multiply
    148,772.08x = 205,310.20 × 81,704.08
  4. Step 4: Simplify right side
    148,772.08x = 16,774,681,005.62
  5. Step 5: Solve for x
    x = 16,774,681,005.62/148,772.08
  6. Step 6: Final answer
    x = 112,754.23

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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.