Home / 83,318.16-124,977.58-20,138.18

Finding the Fourth Proportional to 83,318.16, 124,977.58 and 20,138.18

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Solution

The fourth proportional to 83,318.16, 124,977.58 and 20,138.18 is: 30,207.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,318.16 : 124,977.58 = 20,138.18 : x
  2. Step 2: Convert to fraction form
    83,318.16/124,977.58 = 20,138.18/x
  3. Step 3: Cross multiply
    83,318.16x = 124,977.58 × 20,138.18
  4. Step 4: Simplify right side
    83,318.16x = 2,516,821,002.00
  5. Step 5: Solve for x
    x = 2,516,821,002.00/83,318.16
  6. Step 6: Final answer
    x = 30,207.35

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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.