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Finding the Fourth Proportional to 139,667.92, 192,746.10 and 79,241.11

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Solution

The fourth proportional to 139,667.92, 192,746.10 and 79,241.11 is: 109,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,667.92 : 192,746.10 = 79,241.11 : x
  2. Step 2: Convert to fraction form
    139,667.92/192,746.10 = 79,241.11/x
  3. Step 3: Cross multiply
    139,667.92x = 192,746.10 × 79,241.11
  4. Step 4: Simplify right side
    139,667.92x = 15,273,413,552.24
  5. Step 5: Solve for x
    x = 15,273,413,552.24/139,667.92
  6. Step 6: Final answer
    x = 109,355.21

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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.