Home / 109,187.46-150,676.89-61,440.78

Finding the Fourth Proportional to 109,187.46, 150,676.89 and 61,440.78

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Solution

The fourth proportional to 109,187.46, 150,676.89 and 61,440.78 is: 84,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,187.46 : 150,676.89 = 61,440.78 : x
  2. Step 2: Convert to fraction form
    109,187.46/150,676.89 = 61,440.78/x
  3. Step 3: Cross multiply
    109,187.46x = 150,676.89 × 61,440.78
  4. Step 4: Simplify right side
    109,187.46x = 9,257,705,649.57
  5. Step 5: Solve for x
    x = 9,257,705,649.57/109,187.46
  6. Step 6: Final answer
    x = 84,787.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.