Home / 124,435.20-186,447.60-71,752.80

Finding the Fourth Proportional to 124,435.20, 186,447.60 and 71,752.80

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Solution

The fourth proportional to 124,435.20, 186,447.60 and 71,752.80 is: 107,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.20 : 186,447.60 = 71,752.80 : x
  2. Step 2: Convert to fraction form
    124,435.20/186,447.60 = 71,752.80/x
  3. Step 3: Cross multiply
    124,435.20x = 186,447.60 × 71,752.80
  4. Step 4: Simplify right side
    124,435.20x = 13,378,137,353.28
  5. Step 5: Solve for x
    x = 13,378,137,353.28/124,435.20
  6. Step 6: Final answer
    x = 107,510.88

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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.