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Finding the Fourth Proportional to 139,308.52, 208,919.02 and 59,345.65

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Solution

The fourth proportional to 139,308.52, 208,919.02 and 59,345.65 is: 88,999.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,308.52 : 208,919.02 = 59,345.65 : x
  2. Step 2: Convert to fraction form
    139,308.52/208,919.02 = 59,345.65/x
  3. Step 3: Cross multiply
    139,308.52x = 208,919.02 × 59,345.65
  4. Step 4: Simplify right side
    139,308.52x = 12,398,435,136.44
  5. Step 5: Solve for x
    x = 12,398,435,136.44/139,308.52
  6. Step 6: Final answer
    x = 88,999.83

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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.