Home / 142,204.14-196,244.37-78,540.57

Finding the Fourth Proportional to 142,204.14, 196,244.37 and 78,540.57

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Solution

The fourth proportional to 142,204.14, 196,244.37 and 78,540.57 is: 108,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,204.14 : 196,244.37 = 78,540.57 : x
  2. Step 2: Convert to fraction form
    142,204.14/196,244.37 = 78,540.57/x
  3. Step 3: Cross multiply
    142,204.14x = 196,244.37 × 78,540.57
  4. Step 4: Simplify right side
    142,204.14x = 15,413,144,679.09
  5. Step 5: Solve for x
    x = 15,413,144,679.09/142,204.14
  6. Step 6: Final answer
    x = 108,387.45

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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.