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Finding the Fourth Proportional to 139,834.78, 209,754.29 and 34,653.85

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Solution

The fourth proportional to 139,834.78, 209,754.29 and 34,653.85 is: 51,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,834.78 : 209,754.29 = 34,653.85 : x
  2. Step 2: Convert to fraction form
    139,834.78/209,754.29 = 34,653.85/x
  3. Step 3: Cross multiply
    139,834.78x = 209,754.29 × 34,653.85
  4. Step 4: Simplify right side
    139,834.78x = 7,268,793,264.77
  5. Step 5: Solve for x
    x = 7,268,793,264.77/139,834.78
  6. Step 6: Final answer
    x = 51,981.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.