Home / 138,987.26-191,802.39-75,325.05

Finding the Fourth Proportional to 138,987.26, 191,802.39 and 75,325.05

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Solution

The fourth proportional to 138,987.26, 191,802.39 and 75,325.05 is: 103,948.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,987.26 : 191,802.39 = 75,325.05 : x
  2. Step 2: Convert to fraction form
    138,987.26/191,802.39 = 75,325.05/x
  3. Step 3: Cross multiply
    138,987.26x = 191,802.39 × 75,325.05
  4. Step 4: Simplify right side
    138,987.26x = 14,447,524,616.87
  5. Step 5: Solve for x
    x = 14,447,524,616.87/138,987.26
  6. Step 6: Final answer
    x = 103,948.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.