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Finding the Fourth Proportional to 139,189.52, 208,758.04 and 39,348.92

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Solution

The fourth proportional to 139,189.52, 208,758.04 and 39,348.92 is: 59,015.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,189.52 : 208,758.04 = 39,348.92 : x
  2. Step 2: Convert to fraction form
    139,189.52/208,758.04 = 39,348.92/x
  3. Step 3: Cross multiply
    139,189.52x = 208,758.04 × 39,348.92
  4. Step 4: Simplify right side
    139,189.52x = 8,214,403,415.32
  5. Step 5: Solve for x
    x = 8,214,403,415.32/139,189.52
  6. Step 6: Final answer
    x = 59,015.96

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1.5x scale

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.