Home / 142,881.13-197,187.11-79,231.33

Finding the Fourth Proportional to 142,881.13, 197,187.11 and 79,231.33

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Solution

The fourth proportional to 142,881.13, 197,187.11 and 79,231.33 is: 109,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,881.13 : 197,187.11 = 79,231.33 : x
  2. Step 2: Convert to fraction form
    142,881.13/197,187.11 = 79,231.33/x
  3. Step 3: Cross multiply
    142,881.13x = 197,187.11 × 79,231.33
  4. Step 4: Simplify right side
    142,881.13x = 15,623,396,984.16
  5. Step 5: Solve for x
    x = 15,623,396,984.16/142,881.13
  6. Step 6: Final answer
    x = 109,345.42

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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.