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Finding the Fourth Proportional to 87,180.88, 120,165.84 and 61,654.24

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Solution

The fourth proportional to 87,180.88, 120,165.84 and 61,654.24 is: 84,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180.88 : 120,165.84 = 61,654.24 : x
  2. Step 2: Convert to fraction form
    87,180.88/120,165.84 = 61,654.24/x
  3. Step 3: Cross multiply
    87,180.88x = 120,165.84 × 61,654.24
  4. Step 4: Simplify right side
    87,180.88x = 7,408,733,539.16
  5. Step 5: Solve for x
    x = 7,408,733,539.16/87,180.88
  6. Step 6: Final answer
    x = 84,981.17

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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.