Home / 198,209.88-297,360.18-85,908.90

Finding the Fourth Proportional to 198,209.88, 297,360.18 and 85,908.90

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Solution

The fourth proportional to 198,209.88, 297,360.18 and 85,908.90 is: 128,883.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,209.88 : 297,360.18 = 85,908.90 : x
  2. Step 2: Convert to fraction form
    198,209.88/297,360.18 = 85,908.90/x
  3. Step 3: Cross multiply
    198,209.88x = 297,360.18 × 85,908.90
  4. Step 4: Simplify right side
    198,209.88x = 25,545,885,967.60
  5. Step 5: Solve for x
    x = 25,545,885,967.60/198,209.88
  6. Step 6: Final answer
    x = 128,883.01

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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.