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Finding the Fourth Proportional to 161,486.90, 243,747.18 and 161,486.90

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Solution

The fourth proportional to 161,486.90, 243,747.18 and 161,486.90 is: 243,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,486.90 : 243,747.18 = 161,486.90 : x
  2. Step 2: Convert to fraction form
    161,486.90/243,747.18 = 161,486.90/x
  3. Step 3: Cross multiply
    161,486.90x = 243,747.18 × 161,486.90
  4. Step 4: Simplify right side
    161,486.90x = 39,361,976,481.94
  5. Step 5: Solve for x
    x = 39,361,976,481.94/161,486.90
  6. Step 6: Final answer
    x = 243,747.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.