Home / 139,324.19-192,274.16-78,897.38

Finding the Fourth Proportional to 139,324.19, 192,274.16 and 78,897.38

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Solution

The fourth proportional to 139,324.19, 192,274.16 and 78,897.38 is: 108,882.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,324.19 : 192,274.16 = 78,897.38 : x
  2. Step 2: Convert to fraction form
    139,324.19/192,274.16 = 78,897.38/x
  3. Step 3: Cross multiply
    139,324.19x = 192,274.16 × 78,897.38
  4. Step 4: Simplify right side
    139,324.19x = 15,169,926,109.84
  5. Step 5: Solve for x
    x = 15,169,926,109.84/139,324.19
  6. Step 6: Final answer
    x = 108,882.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.