Home / 124,447.20-186,465.60-71,764.80

Finding the Fourth Proportional to 124,447.20, 186,465.60 and 71,764.80

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Solution

The fourth proportional to 124,447.20, 186,465.60 and 71,764.80 is: 107,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,447.20 : 186,465.60 = 71,764.80 : x
  2. Step 2: Convert to fraction form
    124,447.20/186,465.60 = 71,764.80/x
  3. Step 3: Cross multiply
    124,447.20x = 186,465.60 × 71,764.80
  4. Step 4: Simplify right side
    124,447.20x = 13,381,666,490.88
  5. Step 5: Solve for x
    x = 13,381,666,490.88/124,447.20
  6. Step 6: Final answer
    x = 107,528.87

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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.