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Finding the Fourth Proportional to 118,737.64, 177,823.76 and 68,712.32

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Solution

The fourth proportional to 118,737.64, 177,823.76 and 68,712.32 is: 102,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,737.64 : 177,823.76 = 68,712.32 : x
  2. Step 2: Convert to fraction form
    118,737.64/177,823.76 = 68,712.32/x
  3. Step 3: Cross multiply
    118,737.64x = 177,823.76 × 68,712.32
  4. Step 4: Simplify right side
    118,737.64x = 12,218,683,100.72
  5. Step 5: Solve for x
    x = 12,218,683,100.72/118,737.64
  6. Step 6: Final answer
    x = 102,904.88

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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.