Home / 129,418.89-178,570.51-75,693.41

Finding the Fourth Proportional to 129,418.89, 178,570.51 and 75,693.41

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Solution

The fourth proportional to 129,418.89, 178,570.51 and 75,693.41 is: 104,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,418.89 : 178,570.51 = 75,693.41 : x
  2. Step 2: Convert to fraction form
    129,418.89/178,570.51 = 75,693.41/x
  3. Step 3: Cross multiply
    129,418.89x = 178,570.51 × 75,693.41
  4. Step 4: Simplify right side
    129,418.89x = 13,516,610,414.89
  5. Step 5: Solve for x
    x = 13,516,610,414.89/129,418.89
  6. Step 6: Final answer
    x = 104,440.79

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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.