Home / 107,885.43-161,912.88-74,838.06

Finding the Fourth Proportional to 107,885.43, 161,912.88 and 74,838.06

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Solution

The fourth proportional to 107,885.43, 161,912.88 and 74,838.06 is: 112,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,885.43 : 161,912.88 = 74,838.06 : x
  2. Step 2: Convert to fraction form
    107,885.43/161,912.88 = 74,838.06/x
  3. Step 3: Cross multiply
    107,885.43x = 161,912.88 × 74,838.06
  4. Step 4: Simplify right side
    107,885.43x = 12,117,245,828.21
  5. Step 5: Solve for x
    x = 12,117,245,828.21/107,885.43
  6. Step 6: Final answer
    x = 112,315.87

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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.