Home / 121,310.12-181,910.10-51,151.16

Finding the Fourth Proportional to 121,310.12, 181,910.10 and 51,151.16

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Solution

The fourth proportional to 121,310.12, 181,910.10 and 51,151.16 is: 76,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,310.12 : 181,910.10 = 51,151.16 : x
  2. Step 2: Convert to fraction form
    121,310.12/181,910.10 = 51,151.16/x
  3. Step 3: Cross multiply
    121,310.12x = 181,910.10 × 51,151.16
  4. Step 4: Simplify right side
    121,310.12x = 9,304,912,630.72
  5. Step 5: Solve for x
    x = 9,304,912,630.72/121,310.12
  6. Step 6: Final answer
    x = 76,703.52

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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.