Home / 145,961.20-218,916.78-40,755.88

Finding the Fourth Proportional to 145,961.20, 218,916.78 and 40,755.88

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Solution

The fourth proportional to 145,961.20, 218,916.78 and 40,755.88 is: 61,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,961.20 : 218,916.78 = 40,755.88 : x
  2. Step 2: Convert to fraction form
    145,961.20/218,916.78 = 40,755.88/x
  3. Step 3: Cross multiply
    145,961.20x = 218,916.78 × 40,755.88
  4. Step 4: Simplify right side
    145,961.20x = 8,922,146,015.67
  5. Step 5: Solve for x
    x = 8,922,146,015.67/145,961.20
  6. Step 6: Final answer
    x = 61,126.83

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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.