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Finding the Fourth Proportional to 96,408.60, 144,612.90 and 81,682.80

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Solution

The fourth proportional to 96,408.60, 144,612.90 and 81,682.80 is: 122,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,408.60 : 144,612.90 = 81,682.80 : x
  2. Step 2: Convert to fraction form
    96,408.60/144,612.90 = 81,682.80/x
  3. Step 3: Cross multiply
    96,408.60x = 144,612.90 × 81,682.80
  4. Step 4: Simplify right side
    96,408.60x = 11,812,386,588.12
  5. Step 5: Solve for x
    x = 11,812,386,588.12/96,408.60
  6. Step 6: Final answer
    x = 122,524.20

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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.