Home / 138,989.20-191,799.96-75,325.63

Finding the Fourth Proportional to 138,989.20, 191,799.96 and 75,325.63

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Solution

The fourth proportional to 138,989.20, 191,799.96 and 75,325.63 is: 103,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,989.20 : 191,799.96 = 75,325.63 : x
  2. Step 2: Convert to fraction form
    138,989.20/191,799.96 = 75,325.63/x
  3. Step 3: Cross multiply
    138,989.20x = 191,799.96 × 75,325.63
  4. Step 4: Simplify right side
    138,989.20x = 14,447,452,820.97
  5. Step 5: Solve for x
    x = 14,447,452,820.97/138,989.20
  6. Step 6: Final answer
    x = 103,946.59

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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.