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Finding the Fourth Proportional to 117,007.40, 175,511.10 and 72,489.80

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Solution

The fourth proportional to 117,007.40, 175,511.10 and 72,489.80 is: 108,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,007.40 : 175,511.10 = 72,489.80 : x
  2. Step 2: Convert to fraction form
    117,007.40/175,511.10 = 72,489.80/x
  3. Step 3: Cross multiply
    117,007.40x = 175,511.10 × 72,489.80
  4. Step 4: Simplify right side
    117,007.40x = 12,722,764,536.78
  5. Step 5: Solve for x
    x = 12,722,764,536.78/117,007.40
  6. Step 6: Final answer
    x = 108,734.70

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1.5x scale

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.