Home / 138,270.12-207,404.80-91,512.24

Finding the Fourth Proportional to 138,270.12, 207,404.80 and 91,512.24

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Solution

The fourth proportional to 138,270.12, 207,404.80 and 91,512.24 is: 137,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,270.12 : 207,404.80 = 91,512.24 : x
  2. Step 2: Convert to fraction form
    138,270.12/207,404.80 = 91,512.24/x
  3. Step 3: Cross multiply
    138,270.12x = 207,404.80 × 91,512.24
  4. Step 4: Simplify right side
    138,270.12x = 18,980,077,834.75
  5. Step 5: Solve for x
    x = 18,980,077,834.75/138,270.12
  6. Step 6: Final answer
    x = 137,268.11

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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.