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Finding the Fourth Proportional to 121,882.69, 182,671.82 and 84,142.13

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Solution

The fourth proportional to 121,882.69, 182,671.82 and 84,142.13 is: 126,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,882.69 : 182,671.82 = 84,142.13 : x
  2. Step 2: Convert to fraction form
    121,882.69/182,671.82 = 84,142.13/x
  3. Step 3: Cross multiply
    121,882.69x = 182,671.82 × 84,142.13
  4. Step 4: Simplify right side
    121,882.69x = 15,370,395,605.07
  5. Step 5: Solve for x
    x = 15,370,395,605.07/121,882.69
  6. Step 6: Final answer
    x = 126,108.11

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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.