Home / 124,419.20-186,423.60-71,736.80

Finding the Fourth Proportional to 124,419.20, 186,423.60 and 71,736.80

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Solution

The fourth proportional to 124,419.20, 186,423.60 and 71,736.80 is: 107,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,419.20 : 186,423.60 = 71,736.80 : x
  2. Step 2: Convert to fraction form
    124,419.20/186,423.60 = 71,736.80/x
  3. Step 3: Cross multiply
    124,419.20x = 186,423.60 × 71,736.80
  4. Step 4: Simplify right side
    124,419.20x = 13,373,432,508.48
  5. Step 5: Solve for x
    x = 13,373,432,508.48/124,419.20
  6. Step 6: Final answer
    x = 107,486.89

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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.