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Finding the Fourth Proportional to 139,207.18, 192,105.90 and 75,544.98

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Solution

The fourth proportional to 139,207.18, 192,105.90 and 75,544.98 is: 104,252.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,207.18 : 192,105.90 = 75,544.98 : x
  2. Step 2: Convert to fraction form
    139,207.18/192,105.90 = 75,544.98/x
  3. Step 3: Cross multiply
    139,207.18x = 192,105.90 × 75,544.98
  4. Step 4: Simplify right side
    139,207.18x = 14,512,636,373.38
  5. Step 5: Solve for x
    x = 14,512,636,373.38/139,207.18
  6. Step 6: Final answer
    x = 104,252.07

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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.