Home / 138,176.57-206,835.80-74,839.37

Finding the Fourth Proportional to 138,176.57, 206,835.80 and 74,839.37

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Solution

The fourth proportional to 138,176.57, 206,835.80 and 74,839.37 is: 112,026.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,176.57 : 206,835.80 = 74,839.37 : x
  2. Step 2: Convert to fraction form
    138,176.57/206,835.80 = 74,839.37/x
  3. Step 3: Cross multiply
    138,176.57x = 206,835.80 × 74,839.37
  4. Step 4: Simplify right side
    138,176.57x = 15,479,461,108.34
  5. Step 5: Solve for x
    x = 15,479,461,108.34/138,176.57
  6. Step 6: Final answer
    x = 112,026.67

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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.