Home / 129,317.11-178,430.86-75,591.74

Finding the Fourth Proportional to 129,317.11, 178,430.86 and 75,591.74

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Solution

The fourth proportional to 129,317.11, 178,430.86 and 75,591.74 is: 104,300.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,317.11 : 178,430.86 = 75,591.74 : x
  2. Step 2: Convert to fraction form
    129,317.11/178,430.86 = 75,591.74/x
  3. Step 3: Cross multiply
    129,317.11x = 178,430.86 × 75,591.74
  4. Step 4: Simplify right side
    129,317.11x = 13,487,899,177.10
  5. Step 5: Solve for x
    x = 13,487,899,177.10/129,317.11
  6. Step 6: Final answer
    x = 104,300.96

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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.