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Finding the Fourth Proportional to 139,237.67, 192,142.84 and 75,574.10

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Solution

The fourth proportional to 139,237.67, 192,142.84 and 75,574.10 is: 104,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.67 : 192,142.84 = 75,574.10 : x
  2. Step 2: Convert to fraction form
    139,237.67/192,142.84 = 75,574.10/x
  3. Step 3: Cross multiply
    139,237.67x = 192,142.84 × 75,574.10
  4. Step 4: Simplify right side
    139,237.67x = 14,521,022,204.44
  5. Step 5: Solve for x
    x = 14,521,022,204.44/139,237.67
  6. Step 6: Final answer
    x = 104,289.47

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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.