Home / 103,434.78-142,729.92-58,102.50

Finding the Fourth Proportional to 103,434.78, 142,729.92 and 58,102.50

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Solution

The fourth proportional to 103,434.78, 142,729.92 and 58,102.50 is: 80,175.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,434.78 : 142,729.92 = 58,102.50 : x
  2. Step 2: Convert to fraction form
    103,434.78/142,729.92 = 58,102.50/x
  3. Step 3: Cross multiply
    103,434.78x = 142,729.92 × 58,102.50
  4. Step 4: Simplify right side
    103,434.78x = 8,292,965,176.80
  5. Step 5: Solve for x
    x = 8,292,965,176.80/103,434.78
  6. Step 6: Final answer
    x = 80,175.79

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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.