Home / 129,029.05-178,071.31-71,679.52

Finding the Fourth Proportional to 129,029.05, 178,071.31 and 71,679.52

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Solution

The fourth proportional to 129,029.05, 178,071.31 and 71,679.52 is: 98,923.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,029.05 : 178,071.31 = 71,679.52 : x
  2. Step 2: Convert to fraction form
    129,029.05/178,071.31 = 71,679.52/x
  3. Step 3: Cross multiply
    129,029.05x = 178,071.31 × 71,679.52
  4. Step 4: Simplify right side
    129,029.05x = 12,764,066,026.57
  5. Step 5: Solve for x
    x = 12,764,066,026.57/129,029.05
  6. Step 6: Final answer
    x = 98,923.97

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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.