Home / 109,432.30-164,148.45-90,769.90

Finding the Fourth Proportional to 109,432.30, 164,148.45 and 90,769.90

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Solution

The fourth proportional to 109,432.30, 164,148.45 and 90,769.90 is: 136,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,432.30 : 164,148.45 = 90,769.90 : x
  2. Step 2: Convert to fraction form
    109,432.30/164,148.45 = 90,769.90/x
  3. Step 3: Cross multiply
    109,432.30x = 164,148.45 × 90,769.90
  4. Step 4: Simplify right side
    109,432.30x = 14,899,738,391.66
  5. Step 5: Solve for x
    x = 14,899,738,391.66/109,432.30
  6. Step 6: Final answer
    x = 136,154.85

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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.