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Finding the Fourth Proportional to 139,427.61, 192,411.33 and 75,765.42

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Solution

The fourth proportional to 139,427.61, 192,411.33 and 75,765.42 is: 104,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,427.61 : 192,411.33 = 75,765.42 : x
  2. Step 2: Convert to fraction form
    139,427.61/192,411.33 = 75,765.42/x
  3. Step 3: Cross multiply
    139,427.61x = 192,411.33 × 75,765.42
  4. Step 4: Simplify right side
    139,427.61x = 14,578,125,230.21
  5. Step 5: Solve for x
    x = 14,578,125,230.21/139,427.61
  6. Step 6: Final answer
    x = 104,556.95

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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.