Home / 142,751.20-196,998.06-79,089.88

Finding the Fourth Proportional to 142,751.20, 196,998.06 and 79,089.88

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Solution

The fourth proportional to 142,751.20, 196,998.06 and 79,089.88 is: 109,144.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,751.20 : 196,998.06 = 79,089.88 : x
  2. Step 2: Convert to fraction form
    142,751.20/196,998.06 = 79,089.88/x
  3. Step 3: Cross multiply
    142,751.20x = 196,998.06 × 79,089.88
  4. Step 4: Simplify right side
    142,751.20x = 15,580,552,925.63
  5. Step 5: Solve for x
    x = 15,580,552,925.63/142,751.20
  6. Step 6: Final answer
    x = 109,144.81

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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.