Home / 124,686.20-186,824.10-72,003.80

Finding the Fourth Proportional to 124,686.20, 186,824.10 and 72,003.80

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Solution

The fourth proportional to 124,686.20, 186,824.10 and 72,003.80 is: 107,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,686.20 : 186,824.10 = 72,003.80 : x
  2. Step 2: Convert to fraction form
    124,686.20/186,824.10 = 72,003.80/x
  3. Step 3: Cross multiply
    124,686.20x = 186,824.10 × 72,003.80
  4. Step 4: Simplify right side
    124,686.20x = 13,452,045,131.58
  5. Step 5: Solve for x
    x = 13,452,045,131.58/124,686.20
  6. Step 6: Final answer
    x = 107,887.20

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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.