Home / 107,437.80-161,229.60-69,906.45

Finding the Fourth Proportional to 107,437.80, 161,229.60 and 69,906.45

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Solution

The fourth proportional to 107,437.80, 161,229.60 and 69,906.45 is: 104,907.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,437.80 : 161,229.60 = 69,906.45 : x
  2. Step 2: Convert to fraction form
    107,437.80/161,229.60 = 69,906.45/x
  3. Step 3: Cross multiply
    107,437.80x = 161,229.60 × 69,906.45
  4. Step 4: Simplify right side
    107,437.80x = 11,270,988,970.92
  5. Step 5: Solve for x
    x = 11,270,988,970.92/107,437.80
  6. Step 6: Final answer
    x = 104,907.11

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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.