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Finding the Fourth Proportional to 100,848.70, 151,013.85 and 74,410.30

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Solution

The fourth proportional to 100,848.70, 151,013.85 and 74,410.30 is: 111,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,848.70 : 151,013.85 = 74,410.30 : x
  2. Step 2: Convert to fraction form
    100,848.70/151,013.85 = 74,410.30/x
  3. Step 3: Cross multiply
    100,848.70x = 151,013.85 × 74,410.30
  4. Step 4: Simplify right side
    100,848.70x = 11,236,985,882.66
  5. Step 5: Solve for x
    x = 11,236,985,882.66/100,848.70
  6. Step 6: Final answer
    x = 111,424.20

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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.