Home / 123,929.20-185,688.60-71,246.80

Finding the Fourth Proportional to 123,929.20, 185,688.60 and 71,246.80

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Solution

The fourth proportional to 123,929.20, 185,688.60 and 71,246.80 is: 106,752.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,929.20 : 185,688.60 = 71,246.80 : x
  2. Step 2: Convert to fraction form
    123,929.20/185,688.60 = 71,246.80/x
  3. Step 3: Cross multiply
    123,929.20x = 185,688.60 × 71,246.80
  4. Step 4: Simplify right side
    123,929.20x = 13,229,718,546.48
  5. Step 5: Solve for x
    x = 13,229,718,546.48/123,929.20
  6. Step 6: Final answer
    x = 106,752.23

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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.