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Finding the Fourth Proportional to 147,657.30, 221,230.80 and 68,609.40

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Solution

The fourth proportional to 147,657.30, 221,230.80 and 68,609.40 is: 102,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,657.30 : 221,230.80 = 68,609.40 : x
  2. Step 2: Convert to fraction form
    147,657.30/221,230.80 = 68,609.40/x
  3. Step 3: Cross multiply
    147,657.30x = 221,230.80 × 68,609.40
  4. Step 4: Simplify right side
    147,657.30x = 15,178,512,449.52
  5. Step 5: Solve for x
    x = 15,178,512,449.52/147,657.30
  6. Step 6: Final answer
    x = 102,795.54

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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.