Home / 142,670.19-196,868.97-78,992.04

Finding the Fourth Proportional to 142,670.19, 196,868.97 and 78,992.04

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Solution

The fourth proportional to 142,670.19, 196,868.97 and 78,992.04 is: 109,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,670.19 : 196,868.97 = 78,992.04 : x
  2. Step 2: Convert to fraction form
    142,670.19/196,868.97 = 78,992.04/x
  3. Step 3: Cross multiply
    142,670.19x = 196,868.97 × 78,992.04
  4. Step 4: Simplify right side
    142,670.19x = 15,551,081,553.00
  5. Step 5: Solve for x
    x = 15,551,081,553.00/142,670.19
  6. Step 6: Final answer
    x = 109,000.22

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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.