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Finding the Fourth Proportional to 117,359.60, 176,017.80 and 72,906.80

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Solution

The fourth proportional to 117,359.60, 176,017.80 and 72,906.80 is: 109,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,359.60 : 176,017.80 = 72,906.80 : x
  2. Step 2: Convert to fraction form
    117,359.60/176,017.80 = 72,906.80/x
  3. Step 3: Cross multiply
    117,359.60x = 176,017.80 × 72,906.80
  4. Step 4: Simplify right side
    117,359.60x = 12,832,894,541.04
  5. Step 5: Solve for x
    x = 12,832,894,541.04/117,359.60
  6. Step 6: Final answer
    x = 109,346.78

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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.