Home / 107,938.20-161,907.30-105,864.60

Finding the Fourth Proportional to 107,938.20, 161,907.30 and 105,864.60

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Solution

The fourth proportional to 107,938.20, 161,907.30 and 105,864.60 is: 158,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,938.20 : 161,907.30 = 105,864.60 : x
  2. Step 2: Convert to fraction form
    107,938.20/161,907.30 = 105,864.60/x
  3. Step 3: Cross multiply
    107,938.20x = 161,907.30 × 105,864.60
  4. Step 4: Simplify right side
    107,938.20x = 17,140,251,551.58
  5. Step 5: Solve for x
    x = 17,140,251,551.58/107,938.20
  6. Step 6: Final answer
    x = 158,796.90

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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.