Home / 100,295.17-138,421.53-62,067.03

Finding the Fourth Proportional to 100,295.17, 138,421.53 and 62,067.03

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Solution

The fourth proportional to 100,295.17, 138,421.53 and 62,067.03 is: 85,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,295.17 : 138,421.53 = 62,067.03 : x
  2. Step 2: Convert to fraction form
    100,295.17/138,421.53 = 62,067.03/x
  3. Step 3: Cross multiply
    100,295.17x = 138,421.53 × 62,067.03
  4. Step 4: Simplify right side
    100,295.17x = 8,591,413,821.79
  5. Step 5: Solve for x
    x = 8,591,413,821.79/100,295.17
  6. Step 6: Final answer
    x = 85,661.29

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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.