Home / 138,631.20-207,946.80-55,584.80

Finding the Fourth Proportional to 138,631.20, 207,946.80 and 55,584.80

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Solution

The fourth proportional to 138,631.20, 207,946.80 and 55,584.80 is: 83,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631.20 : 207,946.80 = 55,584.80 : x
  2. Step 2: Convert to fraction form
    138,631.20/207,946.80 = 55,584.80/x
  3. Step 3: Cross multiply
    138,631.20x = 207,946.80 × 55,584.80
  4. Step 4: Simplify right side
    138,631.20x = 11,558,681,288.64
  5. Step 5: Solve for x
    x = 11,558,681,288.64/138,631.20
  6. Step 6: Final answer
    x = 83,377.20

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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.