Home / 138,799.82-191,543.85-75,137.66

Finding the Fourth Proportional to 138,799.82, 191,543.85 and 75,137.66

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Solution

The fourth proportional to 138,799.82, 191,543.85 and 75,137.66 is: 103,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,799.82 : 191,543.85 = 75,137.66 : x
  2. Step 2: Convert to fraction form
    138,799.82/191,543.85 = 75,137.66/x
  3. Step 3: Cross multiply
    138,799.82x = 191,543.85 × 75,137.66
  4. Step 4: Simplify right side
    138,799.82x = 14,392,156,300.70
  5. Step 5: Solve for x
    x = 14,392,156,300.70/138,799.82
  6. Step 6: Final answer
    x = 103,690.03

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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.