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Finding the Fourth Proportional to 104,114.70, 156,135.60 and 54,178.20

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Solution

The fourth proportional to 104,114.70, 156,135.60 and 54,178.20 is: 81,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,114.70 : 156,135.60 = 54,178.20 : x
  2. Step 2: Convert to fraction form
    104,114.70/156,135.60 = 54,178.20/x
  3. Step 3: Cross multiply
    104,114.70x = 156,135.60 × 54,178.20
  4. Step 4: Simplify right side
    104,114.70x = 8,459,145,763.92
  5. Step 5: Solve for x
    x = 8,459,145,763.92/104,114.70
  6. Step 6: Final answer
    x = 81,248.33

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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.