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Finding the Fourth Proportional to 104,138.40, 156,115.44 and 48,719.52

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Solution

The fourth proportional to 104,138.40, 156,115.44 and 48,719.52 is: 73,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,138.40 : 156,115.44 = 48,719.52 : x
  2. Step 2: Convert to fraction form
    104,138.40/156,115.44 = 48,719.52/x
  3. Step 3: Cross multiply
    104,138.40x = 156,115.44 × 48,719.52
  4. Step 4: Simplify right side
    104,138.40x = 7,605,869,301.39
  5. Step 5: Solve for x
    x = 7,605,869,301.39/104,138.40
  6. Step 6: Final answer
    x = 73,036.16

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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.