Home / 198,590.28-297,718.08-86,185.86

Finding the Fourth Proportional to 198,590.28, 297,718.08 and 86,185.86

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Solution

The fourth proportional to 198,590.28, 297,718.08 and 86,185.86 is: 129,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,590.28 : 297,718.08 = 86,185.86 : x
  2. Step 2: Convert to fraction form
    198,590.28/297,718.08 = 86,185.86/x
  3. Step 3: Cross multiply
    198,590.28x = 297,718.08 × 86,185.86
  4. Step 4: Simplify right side
    198,590.28x = 25,659,088,762.35
  5. Step 5: Solve for x
    x = 25,659,088,762.35/198,590.28
  6. Step 6: Final answer
    x = 129,206.17

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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.