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Finding the Fourth Proportional to 87,492.60, 131,238.90 and 69,996.60

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Solution

The fourth proportional to 87,492.60, 131,238.90 and 69,996.60 is: 104,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,492.60 : 131,238.90 = 69,996.60 : x
  2. Step 2: Convert to fraction form
    87,492.60/131,238.90 = 69,996.60/x
  3. Step 3: Cross multiply
    87,492.60x = 131,238.90 × 69,996.60
  4. Step 4: Simplify right side
    87,492.60x = 9,186,276,787.74
  5. Step 5: Solve for x
    x = 9,186,276,787.74/87,492.60
  6. Step 6: Final answer
    x = 104,994.90

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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.