Home / 83,436.90-125,156.14-20,257.58

Finding the Fourth Proportional to 83,436.90, 125,156.14 and 20,257.58

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Solution

The fourth proportional to 83,436.90, 125,156.14 and 20,257.58 is: 30,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,436.90 : 125,156.14 = 20,257.58 : x
  2. Step 2: Convert to fraction form
    83,436.90/125,156.14 = 20,257.58/x
  3. Step 3: Cross multiply
    83,436.90x = 125,156.14 × 20,257.58
  4. Step 4: Simplify right side
    83,436.90x = 2,535,360,780.79
  5. Step 5: Solve for x
    x = 2,535,360,780.79/83,436.90
  6. Step 6: Final answer
    x = 30,386.56

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1.5x scale

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.