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Finding the Fourth Proportional to 146,747.40, 220,121.10 and 123,419.40

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Solution

The fourth proportional to 146,747.40, 220,121.10 and 123,419.40 is: 185,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,747.40 : 220,121.10 = 123,419.40 : x
  2. Step 2: Convert to fraction form
    146,747.40/220,121.10 = 123,419.40/x
  3. Step 3: Cross multiply
    146,747.40x = 220,121.10 × 123,419.40
  4. Step 4: Simplify right side
    146,747.40x = 27,167,214,089.34
  5. Step 5: Solve for x
    x = 27,167,214,089.34/146,747.40
  6. Step 6: Final answer
    x = 185,129.10

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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.