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Finding the Fourth Proportional to 139,149.74, 208,535.88 and 64,104.86

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Solution

The fourth proportional to 139,149.74, 208,535.88 and 64,104.86 is: 96,070.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,149.74 : 208,535.88 = 64,104.86 : x
  2. Step 2: Convert to fraction form
    139,149.74/208,535.88 = 64,104.86/x
  3. Step 3: Cross multiply
    139,149.74x = 208,535.88 × 64,104.86
  4. Step 4: Simplify right side
    139,149.74x = 13,368,163,392.38
  5. Step 5: Solve for x
    x = 13,368,163,392.38/139,149.74
  6. Step 6: Final answer
    x = 96,070.34

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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.