Home / 87,492,117.71-131,114,960.99-66,942,278.39

Finding the Fourth Proportional to 87,492,117.71, 131,114,960.99 and 66,942,278.39

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Solution

The fourth proportional to 87,492,117.71, 131,114,960.99 and 66,942,278.39 is: 100,319,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,492,117.71 : 131,114,960.99 = 66,942,278.39 : x
  2. Step 2: Convert to fraction form
    87,492,117.71/131,114,960.99 = 66,942,278.39/x
  3. Step 3: Cross multiply
    87,492,117.71x = 131,114,960.99 × 66,942,278.39
  4. Step 4: Simplify right side
    87,492,117.71x = 8,777,134,219,679,646
  5. Step 5: Solve for x
    x = 8,777,134,219,679,646/87,492,117.71
  6. Step 6: Final answer
    x = 100,319,142.45

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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.