Home / 198,767.29-298,289.18-128,472.25

Finding the Fourth Proportional to 198,767.29, 298,289.18 and 128,472.25

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Solution

The fourth proportional to 198,767.29, 298,289.18 and 128,472.25 is: 192,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,767.29 : 298,289.18 = 128,472.25 : x
  2. Step 2: Convert to fraction form
    198,767.29/298,289.18 = 128,472.25/x
  3. Step 3: Cross multiply
    198,767.29x = 298,289.18 × 128,472.25
  4. Step 4: Simplify right side
    198,767.29x = 38,321,881,462.89
  5. Step 5: Solve for x
    x = 38,321,881,462.89/198,767.29
  6. Step 6: Final answer
    x = 192,797.73

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1.5x scale

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.