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Finding the Fourth Proportional to 99,902.70, 149,659.65 and 60,342.30

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Solution

The fourth proportional to 99,902.70, 149,659.65 and 60,342.30 is: 90,396.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,902.70 : 149,659.65 = 60,342.30 : x
  2. Step 2: Convert to fraction form
    99,902.70/149,659.65 = 60,342.30/x
  3. Step 3: Cross multiply
    99,902.70x = 149,659.65 × 60,342.30
  4. Step 4: Simplify right side
    99,902.70x = 9,030,807,498.20
  5. Step 5: Solve for x
    x = 9,030,807,498.20/99,902.70
  6. Step 6: Final answer
    x = 90,396.03

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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.