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Finding the Fourth Proportional to 139,168.80, 208,522.80 and 118,432.80

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Solution

The fourth proportional to 139,168.80, 208,522.80 and 118,432.80 is: 177,453.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,168.80 : 208,522.80 = 118,432.80 : x
  2. Step 2: Convert to fraction form
    139,168.80/208,522.80 = 118,432.80/x
  3. Step 3: Cross multiply
    139,168.80x = 208,522.80 × 118,432.80
  4. Step 4: Simplify right side
    139,168.80x = 24,695,939,067.84
  5. Step 5: Solve for x
    x = 24,695,939,067.84/139,168.80
  6. Step 6: Final answer
    x = 177,453.13

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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.