Home / 129,194.16-178,271.91-74,755.68

Finding the Fourth Proportional to 129,194.16, 178,271.91 and 74,755.68

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Solution

The fourth proportional to 129,194.16, 178,271.91 and 74,755.68 is: 103,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,194.16 : 178,271.91 = 74,755.68 : x
  2. Step 2: Convert to fraction form
    129,194.16/178,271.91 = 74,755.68/x
  3. Step 3: Cross multiply
    129,194.16x = 178,271.91 × 74,755.68
  4. Step 4: Simplify right side
    129,194.16x = 13,326,837,856.95
  5. Step 5: Solve for x
    x = 13,326,837,856.95/129,194.16
  6. Step 6: Final answer
    x = 103,153.56

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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.