Home / 109,390.90-163,758.30-102,902.80

Finding the Fourth Proportional to 109,390.90, 163,758.30 and 102,902.80

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Solution

The fourth proportional to 109,390.90, 163,758.30 and 102,902.80 is: 154,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,390.90 : 163,758.30 = 102,902.80 : x
  2. Step 2: Convert to fraction form
    109,390.90/163,758.30 = 102,902.80/x
  3. Step 3: Cross multiply
    109,390.90x = 163,758.30 × 102,902.80
  4. Step 4: Simplify right side
    109,390.90x = 16,851,187,593.24
  5. Step 5: Solve for x
    x = 16,851,187,593.24/109,390.90
  6. Step 6: Final answer
    x = 154,045.61

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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.