Home / 99,629.31-137,486.25-54,305.55

Finding the Fourth Proportional to 99,629.31, 137,486.25 and 54,305.55

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Solution

The fourth proportional to 99,629.31, 137,486.25 and 54,305.55 is: 74,940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,629.31 : 137,486.25 = 54,305.55 : x
  2. Step 2: Convert to fraction form
    99,629.31/137,486.25 = 54,305.55/x
  3. Step 3: Cross multiply
    99,629.31x = 137,486.25 × 54,305.55
  4. Step 4: Simplify right side
    99,629.31x = 7,466,266,423.69
  5. Step 5: Solve for x
    x = 7,466,266,423.69/99,629.31
  6. Step 6: Final answer
    x = 74,940.46

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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.