Home / 99,949.20-137,916.57-64,187.66

Finding the Fourth Proportional to 99,949.20, 137,916.57 and 64,187.66

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Solution

The fourth proportional to 99,949.20, 137,916.57 and 64,187.66 is: 88,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,949.20 : 137,916.57 = 64,187.66 : x
  2. Step 2: Convert to fraction form
    99,949.20/137,916.57 = 64,187.66/x
  3. Step 3: Cross multiply
    99,949.20x = 137,916.57 × 64,187.66
  4. Step 4: Simplify right side
    99,949.20x = 8,852,541,213.94
  5. Step 5: Solve for x
    x = 8,852,541,213.94/99,949.20
  6. Step 6: Final answer
    x = 88,570.41

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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.