Home / 139,801.23-192,924.05-79,373.61

Finding the Fourth Proportional to 139,801.23, 192,924.05 and 79,373.61

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Solution

The fourth proportional to 139,801.23, 192,924.05 and 79,373.61 is: 109,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,801.23 : 192,924.05 = 79,373.61 : x
  2. Step 2: Convert to fraction form
    139,801.23/192,924.05 = 79,373.61/x
  3. Step 3: Cross multiply
    139,801.23x = 192,924.05 × 79,373.61
  4. Step 4: Simplify right side
    139,801.23x = 15,313,077,907.45
  5. Step 5: Solve for x
    x = 15,313,077,907.45/139,801.23
  6. Step 6: Final answer
    x = 109,534.64

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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.