Home / 129,110.23-178,144.48-75,370.85

Finding the Fourth Proportional to 129,110.23, 178,144.48 and 75,370.85

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Solution

The fourth proportional to 129,110.23, 178,144.48 and 75,370.85 is: 103,995.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,110.23 : 178,144.48 = 75,370.85 : x
  2. Step 2: Convert to fraction form
    129,110.23/178,144.48 = 75,370.85/x
  3. Step 3: Cross multiply
    129,110.23x = 178,144.48 × 75,370.85
  4. Step 4: Simplify right side
    129,110.23x = 13,426,901,436.03
  5. Step 5: Solve for x
    x = 13,426,901,436.03/129,110.23
  6. Step 6: Final answer
    x = 103,995.64

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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.