Home / 142,062.03-196,037.31-78,399.66

Finding the Fourth Proportional to 142,062.03, 196,037.31 and 78,399.66

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Solution

The fourth proportional to 142,062.03, 196,037.31 and 78,399.66 is: 108,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,062.03 : 196,037.31 = 78,399.66 : x
  2. Step 2: Convert to fraction form
    142,062.03/196,037.31 = 78,399.66/x
  3. Step 3: Cross multiply
    142,062.03x = 196,037.31 × 78,399.66
  4. Step 4: Simplify right side
    142,062.03x = 15,369,258,451.31
  5. Step 5: Solve for x
    x = 15,369,258,451.31/142,062.03
  6. Step 6: Final answer
    x = 108,186.96

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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.