Home / 124,472.40-186,708.60-77,125.20

Finding the Fourth Proportional to 124,472.40, 186,708.60 and 77,125.20

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Solution

The fourth proportional to 124,472.40, 186,708.60 and 77,125.20 is: 115,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,472.40 : 186,708.60 = 77,125.20 : x
  2. Step 2: Convert to fraction form
    124,472.40/186,708.60 = 77,125.20/x
  3. Step 3: Cross multiply
    124,472.40x = 186,708.60 × 77,125.20
  4. Step 4: Simplify right side
    124,472.40x = 14,399,938,116.72
  5. Step 5: Solve for x
    x = 14,399,938,116.72/124,472.40
  6. Step 6: Final answer
    x = 115,687.80

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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.