Home / 110,712.20-166,505.70-99,339.80

Finding the Fourth Proportional to 110,712.20, 166,505.70 and 99,339.80

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Solution

The fourth proportional to 110,712.20, 166,505.70 and 99,339.80 is: 149,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,712.20 : 166,505.70 = 99,339.80 : x
  2. Step 2: Convert to fraction form
    110,712.20/166,505.70 = 99,339.80/x
  3. Step 3: Cross multiply
    110,712.20x = 166,505.70 × 99,339.80
  4. Step 4: Simplify right side
    110,712.20x = 16,540,642,936.86
  5. Step 5: Solve for x
    x = 16,540,642,936.86/110,712.20
  6. Step 6: Final answer
    x = 149,402.17

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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.