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Finding the Fourth Proportional to 139,278.73, 208,916.04 and 34,097.70

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Solution

The fourth proportional to 139,278.73, 208,916.04 and 34,097.70 is: 51,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,278.73 : 208,916.04 = 34,097.70 : x
  2. Step 2: Convert to fraction form
    139,278.73/208,916.04 = 34,097.70/x
  3. Step 3: Cross multiply
    139,278.73x = 208,916.04 × 34,097.70
  4. Step 4: Simplify right side
    139,278.73x = 7,123,556,457.11
  5. Step 5: Solve for x
    x = 7,123,556,457.11/139,278.73
  6. Step 6: Final answer
    x = 51,146.05

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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.