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Finding the Fourth Proportional to 121,404.90, 182,042.55 and 51,204.90

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Solution

The fourth proportional to 121,404.90, 182,042.55 and 51,204.90 is: 76,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,404.90 : 182,042.55 = 51,204.90 : x
  2. Step 2: Convert to fraction form
    121,404.90/182,042.55 = 51,204.90/x
  3. Step 3: Cross multiply
    121,404.90x = 182,042.55 × 51,204.90
  4. Step 4: Simplify right side
    121,404.90x = 9,321,470,568.50
  5. Step 5: Solve for x
    x = 9,321,470,568.50/121,404.90
  6. Step 6: Final answer
    x = 76,780.02

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1.5x scale

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.