Home / 138,268.12-207,401.80-91,510.24

Finding the Fourth Proportional to 138,268.12, 207,401.80 and 91,510.24

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Solution

The fourth proportional to 138,268.12, 207,401.80 and 91,510.24 is: 137,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,268.12 : 207,401.80 = 91,510.24 : x
  2. Step 2: Convert to fraction form
    138,268.12/207,401.80 = 91,510.24/x
  3. Step 3: Cross multiply
    138,268.12x = 207,401.80 × 91,510.24
  4. Step 4: Simplify right side
    138,268.12x = 18,979,388,494.43
  5. Step 5: Solve for x
    x = 18,979,388,494.43/138,268.12
  6. Step 6: Final answer
    x = 137,265.11

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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.