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Finding the Fourth Proportional to 139,155.73, 208,733.60 and 49,264.40

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Solution

The fourth proportional to 139,155.73, 208,733.60 and 49,264.40 is: 73,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,155.73 : 208,733.60 = 49,264.40 : x
  2. Step 2: Convert to fraction form
    139,155.73/208,733.60 = 49,264.40/x
  3. Step 3: Cross multiply
    139,155.73x = 208,733.60 × 49,264.40
  4. Step 4: Simplify right side
    139,155.73x = 10,283,134,853.30
  5. Step 5: Solve for x
    x = 10,283,134,853.30/139,155.73
  6. Step 6: Final answer
    x = 73,896.59

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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.