Home / 118,342.20-177,513.30-99,679.80

Finding the Fourth Proportional to 118,342.20, 177,513.30 and 99,679.80

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Solution

The fourth proportional to 118,342.20, 177,513.30 and 99,679.80 is: 149,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,342.20 : 177,513.30 = 99,679.80 : x
  2. Step 2: Convert to fraction form
    118,342.20/177,513.30 = 99,679.80/x
  3. Step 3: Cross multiply
    118,342.20x = 177,513.30 × 99,679.80
  4. Step 4: Simplify right side
    118,342.20x = 17,694,490,241.34
  5. Step 5: Solve for x
    x = 17,694,490,241.34/118,342.20
  6. Step 6: Final answer
    x = 149,519.70

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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.