Home / 140,021.12-193,240.62-79,610.72

Finding the Fourth Proportional to 140,021.12, 193,240.62 and 79,610.72

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Solution

The fourth proportional to 140,021.12, 193,240.62 and 79,610.72 is: 109,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,021.12 : 193,240.62 = 79,610.72 : x
  2. Step 2: Convert to fraction form
    140,021.12/193,240.62 = 79,610.72/x
  3. Step 3: Cross multiply
    140,021.12x = 193,240.62 × 79,610.72
  4. Step 4: Simplify right side
    140,021.12x = 15,384,023,925.24
  5. Step 5: Solve for x
    x = 15,384,023,925.24/140,021.12
  6. Step 6: Final answer
    x = 109,869.31

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1.5x scale

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.