Home / 101,987.10-140,745.33-61,708.26

Finding the Fourth Proportional to 101,987.10, 140,745.33 and 61,708.26

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Solution

The fourth proportional to 101,987.10, 140,745.33 and 61,708.26 is: 85,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,987.10 : 140,745.33 = 61,708.26 : x
  2. Step 2: Convert to fraction form
    101,987.10/140,745.33 = 61,708.26/x
  3. Step 3: Cross multiply
    101,987.10x = 140,745.33 × 61,708.26
  4. Step 4: Simplify right side
    101,987.10x = 8,685,149,417.43
  5. Step 5: Solve for x
    x = 8,685,149,417.43/101,987.10
  6. Step 6: Final answer
    x = 85,159.29

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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.