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Finding the Fourth Proportional to 139,371.80, 192,226.56 and 120,024.22

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Solution

The fourth proportional to 139,371.80, 192,226.56 and 120,024.22 is: 165,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,371.80 : 192,226.56 = 120,024.22 : x
  2. Step 2: Convert to fraction form
    139,371.80/192,226.56 = 120,024.22/x
  3. Step 3: Cross multiply
    139,371.80x = 192,226.56 × 120,024.22
  4. Step 4: Simplify right side
    139,371.80x = 23,071,842,446.72
  5. Step 5: Solve for x
    x = 23,071,842,446.72/139,371.80
  6. Step 6: Final answer
    x = 165,541.69

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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.