Home / 108,129.36-149,209.92-60,379.86

Finding the Fourth Proportional to 108,129.36, 149,209.92 and 60,379.86

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Solution

The fourth proportional to 108,129.36, 149,209.92 and 60,379.86 is: 83,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,129.36 : 149,209.92 = 60,379.86 : x
  2. Step 2: Convert to fraction form
    108,129.36/149,209.92 = 60,379.86/x
  3. Step 3: Cross multiply
    108,129.36x = 149,209.92 × 60,379.86
  4. Step 4: Simplify right side
    108,129.36x = 9,009,274,080.21
  5. Step 5: Solve for x
    x = 9,009,274,080.21/108,129.36
  6. Step 6: Final answer
    x = 83,319.41

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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.