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Finding the Fourth Proportional to 105,989.90, 158,984.85 and 27,110.30

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Solution

The fourth proportional to 105,989.90, 158,984.85 and 27,110.30 is: 40,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,989.90 : 158,984.85 = 27,110.30 : x
  2. Step 2: Convert to fraction form
    105,989.90/158,984.85 = 27,110.30/x
  3. Step 3: Cross multiply
    105,989.90x = 158,984.85 × 27,110.30
  4. Step 4: Simplify right side
    105,989.90x = 4,310,126,978.96
  5. Step 5: Solve for x
    x = 4,310,126,978.96/105,989.90
  6. Step 6: Final answer
    x = 40,665.45

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Similar ratio
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1.5x scale

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.