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Finding the Fourth Proportional to 117,489.60, 176,234.40 and 38,611.80

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Solution

The fourth proportional to 117,489.60, 176,234.40 and 38,611.80 is: 57,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.60 : 176,234.40 = 38,611.80 : x
  2. Step 2: Convert to fraction form
    117,489.60/176,234.40 = 38,611.80/x
  3. Step 3: Cross multiply
    117,489.60x = 176,234.40 × 38,611.80
  4. Step 4: Simplify right side
    117,489.60x = 6,804,727,405.92
  5. Step 5: Solve for x
    x = 6,804,727,405.92/117,489.60
  6. Step 6: Final answer
    x = 57,917.70

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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.