Home / 99,609.89-137,457.65-54,286.90

Finding the Fourth Proportional to 99,609.89, 137,457.65 and 54,286.90

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Solution

The fourth proportional to 99,609.89, 137,457.65 and 54,286.90 is: 74,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,609.89 : 137,457.65 = 54,286.90 : x
  2. Step 2: Convert to fraction form
    99,609.89/137,457.65 = 54,286.90/x
  3. Step 3: Cross multiply
    99,609.89x = 137,457.65 × 54,286.90
  4. Step 4: Simplify right side
    99,609.89x = 7,462,149,351.78
  5. Step 5: Solve for x
    x = 7,462,149,351.78/99,609.89
  6. Step 6: Final answer
    x = 74,913.74

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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.