Home / 83,268.10-124,902.15-20,938.60

Finding the Fourth Proportional to 83,268.10, 124,902.15 and 20,938.60

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Solution

The fourth proportional to 83,268.10, 124,902.15 and 20,938.60 is: 31,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,268.10 : 124,902.15 = 20,938.60 : x
  2. Step 2: Convert to fraction form
    83,268.10/124,902.15 = 20,938.60/x
  3. Step 3: Cross multiply
    83,268.10x = 124,902.15 × 20,938.60
  4. Step 4: Simplify right side
    83,268.10x = 2,615,276,157.99
  5. Step 5: Solve for x
    x = 2,615,276,157.99/83,268.10
  6. Step 6: Final answer
    x = 31,407.90

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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.