Home / 199,031.18-298,669.78-80,703.54

Finding the Fourth Proportional to 199,031.18, 298,669.78 and 80,703.54

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Solution

The fourth proportional to 199,031.18, 298,669.78 and 80,703.54 is: 121,105.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,031.18 : 298,669.78 = 80,703.54 : x
  2. Step 2: Convert to fraction form
    199,031.18/298,669.78 = 80,703.54/x
  3. Step 3: Cross multiply
    199,031.18x = 298,669.78 × 80,703.54
  4. Step 4: Simplify right side
    199,031.18x = 24,103,708,637.90
  5. Step 5: Solve for x
    x = 24,103,708,637.90/199,031.18
  6. Step 6: Final answer
    x = 121,105.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.