Home / 107,436.80-161,228.10-69,905.45

Finding the Fourth Proportional to 107,436.80, 161,228.10 and 69,905.45

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Solution

The fourth proportional to 107,436.80, 161,228.10 and 69,905.45 is: 104,905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,436.80 : 161,228.10 = 69,905.45 : x
  2. Step 2: Convert to fraction form
    107,436.80/161,228.10 = 69,905.45/x
  3. Step 3: Cross multiply
    107,436.80x = 161,228.10 × 69,905.45
  4. Step 4: Simplify right side
    107,436.80x = 11,270,722,883.15
  5. Step 5: Solve for x
    x = 11,270,722,883.15/107,436.80
  6. Step 6: Final answer
    x = 104,905.61

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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.