Home / 139,371.19-209,128.29-68,292.49

Finding the Fourth Proportional to 139,371.19, 209,128.29 and 68,292.49

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Solution

The fourth proportional to 139,371.19, 209,128.29 and 68,292.49 is: 102,473.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,371.19 : 209,128.29 = 68,292.49 : x
  2. Step 2: Convert to fraction form
    139,371.19/209,128.29 = 68,292.49/x
  3. Step 3: Cross multiply
    139,371.19x = 209,128.29 × 68,292.49
  4. Step 4: Simplify right side
    139,371.19x = 14,281,891,902.93
  5. Step 5: Solve for x
    x = 14,281,891,902.93/139,371.19
  6. Step 6: Final answer
    x = 102,473.78

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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.