Home / 142,747.02-196,992.54-78,218.10

Finding the Fourth Proportional to 142,747.02, 196,992.54 and 78,218.10

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Solution

The fourth proportional to 142,747.02, 196,992.54 and 78,218.10 is: 107,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747.02 : 196,992.54 = 78,218.10 : x
  2. Step 2: Convert to fraction form
    142,747.02/196,992.54 = 78,218.10/x
  3. Step 3: Cross multiply
    142,747.02x = 196,992.54 × 78,218.10
  4. Step 4: Simplify right side
    142,747.02x = 15,408,382,192.97
  5. Step 5: Solve for x
    x = 15,408,382,192.97/142,747.02
  6. Step 6: Final answer
    x = 107,941.88

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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.