Home / 124,423.20-186,429.60-71,740.80

Finding the Fourth Proportional to 124,423.20, 186,429.60 and 71,740.80

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Solution

The fourth proportional to 124,423.20, 186,429.60 and 71,740.80 is: 107,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,423.20 : 186,429.60 = 71,740.80 : x
  2. Step 2: Convert to fraction form
    124,423.20/186,429.60 = 71,740.80/x
  3. Step 3: Cross multiply
    124,423.20x = 186,429.60 × 71,740.80
  4. Step 4: Simplify right side
    124,423.20x = 13,374,608,647.68
  5. Step 5: Solve for x
    x = 13,374,608,647.68/124,423.20
  6. Step 6: Final answer
    x = 107,492.88

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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.