Home / 129,052.69-178,086.66-71,695.72

Finding the Fourth Proportional to 129,052.69, 178,086.66 and 71,695.72

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Solution

The fourth proportional to 129,052.69, 178,086.66 and 71,695.72 is: 98,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,052.69 : 178,086.66 = 71,695.72 : x
  2. Step 2: Convert to fraction form
    129,052.69/178,086.66 = 71,695.72/x
  3. Step 3: Cross multiply
    129,052.69x = 178,086.66 × 71,695.72
  4. Step 4: Simplify right side
    129,052.69x = 12,768,050,464.75
  5. Step 5: Solve for x
    x = 12,768,050,464.75/129,052.69
  6. Step 6: Final answer
    x = 98,936.72

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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.