Home / 99,731.33-137,642.58-63,436.31

Finding the Fourth Proportional to 99,731.33, 137,642.58 and 63,436.31

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Solution

The fourth proportional to 99,731.33, 137,642.58 and 63,436.31 is: 87,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,731.33 : 137,642.58 = 63,436.31 : x
  2. Step 2: Convert to fraction form
    99,731.33/137,642.58 = 63,436.31/x
  3. Step 3: Cross multiply
    99,731.33x = 137,642.58 × 63,436.31
  4. Step 4: Simplify right side
    99,731.33x = 8,731,536,685.87
  5. Step 5: Solve for x
    x = 8,731,536,685.87/99,731.33
  6. Step 6: Final answer
    x = 87,550.59

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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.