Home / 129,097.82-178,151.42-71,735.66

Finding the Fourth Proportional to 129,097.82, 178,151.42 and 71,735.66

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Solution

The fourth proportional to 129,097.82, 178,151.42 and 71,735.66 is: 98,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,097.82 : 178,151.42 = 71,735.66 : x
  2. Step 2: Convert to fraction form
    129,097.82/178,151.42 = 71,735.66/x
  3. Step 3: Cross multiply
    129,097.82x = 178,151.42 × 71,735.66
  4. Step 4: Simplify right side
    129,097.82x = 12,779,808,444.20
  5. Step 5: Solve for x
    x = 12,779,808,444.20/129,097.82
  6. Step 6: Final answer
    x = 98,993.22

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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.