Home / 107,821.60-161,732.40-105,517.60

Finding the Fourth Proportional to 107,821.60, 161,732.40 and 105,517.60

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Solution

The fourth proportional to 107,821.60, 161,732.40 and 105,517.60 is: 158,276.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,821.60 : 161,732.40 = 105,517.60 : x
  2. Step 2: Convert to fraction form
    107,821.60/161,732.40 = 105,517.60/x
  3. Step 3: Cross multiply
    107,821.60x = 161,732.40 × 105,517.60
  4. Step 4: Simplify right side
    107,821.60x = 17,065,614,690.24
  5. Step 5: Solve for x
    x = 17,065,614,690.24/107,821.60
  6. Step 6: Final answer
    x = 158,276.40

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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.