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Finding the Fourth Proportional to 139,415.28, 192,394.83 and 75,754.14

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Solution

The fourth proportional to 139,415.28, 192,394.83 and 75,754.14 is: 104,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,415.28 : 192,394.83 = 75,754.14 : x
  2. Step 2: Convert to fraction form
    139,415.28/192,394.83 = 75,754.14/x
  3. Step 3: Cross multiply
    139,415.28x = 192,394.83 × 75,754.14
  4. Step 4: Simplify right side
    139,415.28x = 14,574,704,887.10
  5. Step 5: Solve for x
    x = 14,574,704,887.10/139,415.28
  6. Step 6: Final answer
    x = 104,541.66

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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.