Home / 83,172.12-124,758.36-20,842.80

Finding the Fourth Proportional to 83,172.12, 124,758.36 and 20,842.80

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Solution

The fourth proportional to 83,172.12, 124,758.36 and 20,842.80 is: 31,264.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,172.12 : 124,758.36 = 20,842.80 : x
  2. Step 2: Convert to fraction form
    83,172.12/124,758.36 = 20,842.80/x
  3. Step 3: Cross multiply
    83,172.12x = 124,758.36 × 20,842.80
  4. Step 4: Simplify right side
    83,172.12x = 2,600,313,545.81
  5. Step 5: Solve for x
    x = 2,600,313,545.81/83,172.12
  6. Step 6: Final answer
    x = 31,264.25

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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.