Home / 142,815.01-197,091.11-79,148.71

Finding the Fourth Proportional to 142,815.01, 197,091.11 and 79,148.71

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Solution

The fourth proportional to 142,815.01, 197,091.11 and 79,148.71 is: 109,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,815.01 : 197,091.11 = 79,148.71 : x
  2. Step 2: Convert to fraction form
    142,815.01/197,091.11 = 79,148.71/x
  3. Step 3: Cross multiply
    142,815.01x = 197,091.11 × 79,148.71
  4. Step 4: Simplify right side
    142,815.01x = 15,599,507,108.97
  5. Step 5: Solve for x
    x = 15,599,507,108.97/142,815.01
  6. Step 6: Final answer
    x = 109,228.76

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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.