Home / 121,789.20-182,712.60-38,683.20

Finding the Fourth Proportional to 121,789.20, 182,712.60 and 38,683.20

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Solution

The fourth proportional to 121,789.20, 182,712.60 and 38,683.20 is: 58,033.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,789.20 : 182,712.60 = 38,683.20 : x
  2. Step 2: Convert to fraction form
    121,789.20/182,712.60 = 38,683.20/x
  3. Step 3: Cross multiply
    121,789.20x = 182,712.60 × 38,683.20
  4. Step 4: Simplify right side
    121,789.20x = 7,067,908,048.32
  5. Step 5: Solve for x
    x = 7,067,908,048.32/121,789.20
  6. Step 6: Final answer
    x = 58,033.95

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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.