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Finding the Fourth Proportional to 139,972, 193,506.96 and 134,096.80

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Solution

The fourth proportional to 139,972, 193,506.96 and 134,096.80 is: 185,384.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,972 : 193,506.96 = 134,096.80 : x
  2. Step 2: Convert to fraction form
    139,972/193,506.96 = 134,096.80/x
  3. Step 3: Cross multiply
    139,972x = 193,506.96 × 134,096.80
  4. Step 4: Simplify right side
    139,972x = 25,948,664,113.73
  5. Step 5: Solve for x
    x = 25,948,664,113.73/139,972
  6. Step 6: Final answer
    x = 185,384.68

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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.