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Finding the Fourth Proportional to 139,193.60, 208,789.40 and 34,011.60

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Solution

The fourth proportional to 139,193.60, 208,789.40 and 34,011.60 is: 51,017.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,193.60 : 208,789.40 = 34,011.60 : x
  2. Step 2: Convert to fraction form
    139,193.60/208,789.40 = 34,011.60/x
  3. Step 3: Cross multiply
    139,193.60x = 208,789.40 × 34,011.60
  4. Step 4: Simplify right side
    139,193.60x = 7,101,261,557.04
  5. Step 5: Solve for x
    x = 7,101,261,557.04/139,193.60
  6. Step 6: Final answer
    x = 51,017.16

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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.