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Finding the Fourth Proportional to 159,996.66, 220,795.50 and 87,400.56

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Solution

The fourth proportional to 159,996.66, 220,795.50 and 87,400.56 is: 120,612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,996.66 : 220,795.50 = 87,400.56 : x
  2. Step 2: Convert to fraction form
    159,996.66/220,795.50 = 87,400.56/x
  3. Step 3: Cross multiply
    159,996.66x = 220,795.50 × 87,400.56
  4. Step 4: Simplify right side
    159,996.66x = 19,297,650,345.48
  5. Step 5: Solve for x
    x = 19,297,650,345.48/159,996.66
  6. Step 6: Final answer
    x = 120,612.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.