Home / 124,421.20-186,426.60-71,738.80

Finding the Fourth Proportional to 124,421.20, 186,426.60 and 71,738.80

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Solution

The fourth proportional to 124,421.20, 186,426.60 and 71,738.80 is: 107,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,421.20 : 186,426.60 = 71,738.80 : x
  2. Step 2: Convert to fraction form
    124,421.20/186,426.60 = 71,738.80/x
  3. Step 3: Cross multiply
    124,421.20x = 186,426.60 × 71,738.80
  4. Step 4: Simplify right side
    124,421.20x = 13,374,020,572.08
  5. Step 5: Solve for x
    x = 13,374,020,572.08/124,421.20
  6. Step 6: Final answer
    x = 107,489.89

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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.