Home / 198,767.04-298,288.80-128,472

Finding the Fourth Proportional to 198,767.04, 298,288.80 and 128,472

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Solution

The fourth proportional to 198,767.04, 298,288.80 and 128,472 is: 192,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,767.04 : 298,288.80 = 128,472 : x
  2. Step 2: Convert to fraction form
    198,767.04/298,288.80 = 128,472/x
  3. Step 3: Cross multiply
    198,767.04x = 298,288.80 × 128,472
  4. Step 4: Simplify right side
    198,767.04x = 38,321,758,713.60
  5. Step 5: Solve for x
    x = 38,321,758,713.60/198,767.04
  6. Step 6: Final answer
    x = 192,797.35

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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.