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Finding the Fourth Proportional to 84,101.70, 126,152.55 and 34,165.20

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Solution

The fourth proportional to 84,101.70, 126,152.55 and 34,165.20 is: 51,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,101.70 : 126,152.55 = 34,165.20 : x
  2. Step 2: Convert to fraction form
    84,101.70/126,152.55 = 34,165.20/x
  3. Step 3: Cross multiply
    84,101.70x = 126,152.55 × 34,165.20
  4. Step 4: Simplify right side
    84,101.70x = 4,310,027,101.26
  5. Step 5: Solve for x
    x = 4,310,027,101.26/84,101.70
  6. Step 6: Final answer
    x = 51,247.80

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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.