Home / 87,492,118.10-131,114,961.56-66,942,278.78

Finding the Fourth Proportional to 87,492,118.10, 131,114,961.56 and 66,942,278.78

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Solution

The fourth proportional to 87,492,118.10, 131,114,961.56 and 66,942,278.78 is: 100,319,143.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,492,118.10 : 131,114,961.56 = 66,942,278.78 : x
  2. Step 2: Convert to fraction form
    87,492,118.10/131,114,961.56 = 66,942,278.78/x
  3. Step 3: Cross multiply
    87,492,118.10x = 131,114,961.56 × 66,942,278.78
  4. Step 4: Simplify right side
    87,492,118.10x = 8,777,134,307,988,218
  5. Step 5: Solve for x
    x = 8,777,134,307,988,218/87,492,118.10
  6. Step 6: Final answer
    x = 100,319,143.02

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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.