Home / 139,799.94-192,929.37-79,376.21

Finding the Fourth Proportional to 139,799.94, 192,929.37 and 79,376.21

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Solution

The fourth proportional to 139,799.94, 192,929.37 and 79,376.21 is: 109,542.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,799.94 : 192,929.37 = 79,376.21 : x
  2. Step 2: Convert to fraction form
    139,799.94/192,929.37 = 79,376.21/x
  3. Step 3: Cross multiply
    139,799.94x = 192,929.37 × 79,376.21
  4. Step 4: Simplify right side
    139,799.94x = 15,314,001,223.64
  5. Step 5: Solve for x
    x = 15,314,001,223.64/139,799.94
  6. Step 6: Final answer
    x = 109,542.26

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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.