Home / 139,436.03-192,421.19-79,018.17

Finding the Fourth Proportional to 139,436.03, 192,421.19 and 79,018.17

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Solution

The fourth proportional to 139,436.03, 192,421.19 and 79,018.17 is: 109,044.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,436.03 : 192,421.19 = 79,018.17 : x
  2. Step 2: Convert to fraction form
    139,436.03/192,421.19 = 79,018.17/x
  3. Step 3: Cross multiply
    139,436.03x = 192,421.19 × 79,018.17
  4. Step 4: Simplify right side
    139,436.03x = 15,204,769,907.93
  5. Step 5: Solve for x
    x = 15,204,769,907.93/139,436.03
  6. Step 6: Final answer
    x = 109,044.77

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1.5x scale

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.