Home / 139,378.23-192,340.89-75,716.48

Finding the Fourth Proportional to 139,378.23, 192,340.89 and 75,716.48

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Solution

The fourth proportional to 139,378.23, 192,340.89 and 75,716.48 is: 104,488.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,378.23 : 192,340.89 = 75,716.48 : x
  2. Step 2: Convert to fraction form
    139,378.23/192,340.89 = 75,716.48/x
  3. Step 3: Cross multiply
    139,378.23x = 192,340.89 × 75,716.48
  4. Step 4: Simplify right side
    139,378.23x = 14,563,374,189.16
  5. Step 5: Solve for x
    x = 14,563,374,189.16/139,378.23
  6. Step 6: Final answer
    x = 104,488.16

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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.