Home / 107,537.10-161,305.65-90,429.90

Finding the Fourth Proportional to 107,537.10, 161,305.65 and 90,429.90

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Solution

The fourth proportional to 107,537.10, 161,305.65 and 90,429.90 is: 135,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,537.10 : 161,305.65 = 90,429.90 : x
  2. Step 2: Convert to fraction form
    107,537.10/161,305.65 = 90,429.90/x
  3. Step 3: Cross multiply
    107,537.10x = 161,305.65 × 90,429.90
  4. Step 4: Simplify right side
    107,537.10x = 14,586,853,798.94
  5. Step 5: Solve for x
    x = 14,586,853,798.94/107,537.10
  6. Step 6: Final answer
    x = 135,644.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.