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Finding the Fourth Proportional to 121,699.80, 182,462.16 and 55,105.65

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Solution

The fourth proportional to 121,699.80, 182,462.16 and 55,105.65 is: 82,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,699.80 : 182,462.16 = 55,105.65 : x
  2. Step 2: Convert to fraction form
    121,699.80/182,462.16 = 55,105.65/x
  3. Step 3: Cross multiply
    121,699.80x = 182,462.16 × 55,105.65
  4. Step 4: Simplify right side
    121,699.80x = 10,054,695,927.20
  5. Step 5: Solve for x
    x = 10,054,695,927.20/121,699.80
  6. Step 6: Final answer
    x = 82,618.84

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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.