Home / 124,689.20-186,828.60-72,006.80

Finding the Fourth Proportional to 124,689.20, 186,828.60 and 72,006.80

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Solution

The fourth proportional to 124,689.20, 186,828.60 and 72,006.80 is: 107,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,689.20 : 186,828.60 = 72,006.80 : x
  2. Step 2: Convert to fraction form
    124,689.20/186,828.60 = 72,006.80/x
  3. Step 3: Cross multiply
    124,689.20x = 186,828.60 × 72,006.80
  4. Step 4: Simplify right side
    124,689.20x = 13,452,929,634.48
  5. Step 5: Solve for x
    x = 13,452,929,634.48/124,689.20
  6. Step 6: Final answer
    x = 107,891.70

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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.