Home / 142,054.13-196,028.97-78,391.10

Finding the Fourth Proportional to 142,054.13, 196,028.97 and 78,391.10

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Solution

The fourth proportional to 142,054.13, 196,028.97 and 78,391.10 is: 108,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,054.13 : 196,028.97 = 78,391.10 : x
  2. Step 2: Convert to fraction form
    142,054.13/196,028.97 = 78,391.10/x
  3. Step 3: Cross multiply
    142,054.13x = 196,028.97 × 78,391.10
  4. Step 4: Simplify right side
    142,054.13x = 15,366,926,590.17
  5. Step 5: Solve for x
    x = 15,366,926,590.17/142,054.13
  6. Step 6: Final answer
    x = 108,176.56

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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.