Home / 142,648.92-196,851.06-78,115.32

Finding the Fourth Proportional to 142,648.92, 196,851.06 and 78,115.32

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Solution

The fourth proportional to 142,648.92, 196,851.06 and 78,115.32 is: 107,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,648.92 : 196,851.06 = 78,115.32 : x
  2. Step 2: Convert to fraction form
    142,648.92/196,851.06 = 78,115.32/x
  3. Step 3: Cross multiply
    142,648.92x = 196,851.06 × 78,115.32
  4. Step 4: Simplify right side
    142,648.92x = 15,377,083,544.24
  5. Step 5: Solve for x
    x = 15,377,083,544.24/142,648.92
  6. Step 6: Final answer
    x = 107,796.70

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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.