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Finding the Fourth Proportional to 139,251.71, 192,167.20 and 75,589.51

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Solution

The fourth proportional to 139,251.71, 192,167.20 and 75,589.51 is: 104,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,251.71 : 192,167.20 = 75,589.51 : x
  2. Step 2: Convert to fraction form
    139,251.71/192,167.20 = 75,589.51/x
  3. Step 3: Cross multiply
    139,251.71x = 192,167.20 × 75,589.51
  4. Step 4: Simplify right side
    139,251.71x = 14,525,824,486.07
  5. Step 5: Solve for x
    x = 14,525,824,486.07/139,251.71
  6. Step 6: Final answer
    x = 104,313.44

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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.