Home / 138,770.52-191,503.20-75,108.18

Finding the Fourth Proportional to 138,770.52, 191,503.20 and 75,108.18

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Solution

The fourth proportional to 138,770.52, 191,503.20 and 75,108.18 is: 103,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,770.52 : 191,503.20 = 75,108.18 : x
  2. Step 2: Convert to fraction form
    138,770.52/191,503.20 = 75,108.18/x
  3. Step 3: Cross multiply
    138,770.52x = 191,503.20 × 75,108.18
  4. Step 4: Simplify right side
    138,770.52x = 14,383,456,816.18
  5. Step 5: Solve for x
    x = 14,383,456,816.18/138,770.52
  6. Step 6: Final answer
    x = 103,649.22

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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.