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Finding the Fourth Proportional to 132,482.88, 182,801.61 and 78,781.11

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Solution

The fourth proportional to 132,482.88, 182,801.61 and 78,781.11 is: 108,703.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,482.88 : 182,801.61 = 78,781.11 : x
  2. Step 2: Convert to fraction form
    132,482.88/182,801.61 = 78,781.11/x
  3. Step 3: Cross multiply
    132,482.88x = 182,801.61 × 78,781.11
  4. Step 4: Simplify right side
    132,482.88x = 14,401,313,745.59
  5. Step 5: Solve for x
    x = 14,401,313,745.59/132,482.88
  6. Step 6: Final answer
    x = 108,703.21

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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.