Home / 142,922.15-197,231.22-78,390.07

Finding the Fourth Proportional to 142,922.15, 197,231.22 and 78,390.07

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Solution

The fourth proportional to 142,922.15, 197,231.22 and 78,390.07 is: 108,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,922.15 : 197,231.22 = 78,390.07 : x
  2. Step 2: Convert to fraction form
    142,922.15/197,231.22 = 78,390.07/x
  3. Step 3: Cross multiply
    142,922.15x = 197,231.22 × 78,390.07
  4. Step 4: Simplify right side
    142,922.15x = 15,460,968,648.91
  5. Step 5: Solve for x
    x = 15,460,968,648.91/142,922.15
  6. Step 6: Final answer
    x = 108,177.56

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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.