Home / 105,741.78-145,910.13-60,422.70

Finding the Fourth Proportional to 105,741.78, 145,910.13 and 60,422.70

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Solution

The fourth proportional to 105,741.78, 145,910.13 and 60,422.70 is: 83,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,741.78 : 145,910.13 = 60,422.70 : x
  2. Step 2: Convert to fraction form
    105,741.78/145,910.13 = 60,422.70/x
  3. Step 3: Cross multiply
    105,741.78x = 145,910.13 × 60,422.70
  4. Step 4: Simplify right side
    105,741.78x = 8,816,284,011.95
  5. Step 5: Solve for x
    x = 8,816,284,011.95/105,741.78
  6. Step 6: Final answer
    x = 83,375.60

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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.