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Finding the Fourth Proportional to 117,060.80, 175,720.80 and 72,737.60

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Solution

The fourth proportional to 117,060.80, 175,720.80 and 72,737.60 is: 109,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,060.80 : 175,720.80 = 72,737.60 : x
  2. Step 2: Convert to fraction form
    117,060.80/175,720.80 = 72,737.60/x
  3. Step 3: Cross multiply
    117,060.80x = 175,720.80 × 72,737.60
  4. Step 4: Simplify right side
    117,060.80x = 12,781,509,262.08
  5. Step 5: Solve for x
    x = 12,781,509,262.08/117,060.80
  6. Step 6: Final answer
    x = 109,186.93

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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.