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Finding the Fourth Proportional to 155,491.69, 214,607.89 and 97,375.43

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Solution

The fourth proportional to 155,491.69, 214,607.89 and 97,375.43 is: 134,396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,491.69 : 214,607.89 = 97,375.43 : x
  2. Step 2: Convert to fraction form
    155,491.69/214,607.89 = 97,375.43/x
  3. Step 3: Cross multiply
    155,491.69x = 214,607.89 × 97,375.43
  4. Step 4: Simplify right side
    155,491.69x = 20,897,535,570.14
  5. Step 5: Solve for x
    x = 20,897,535,570.14/155,491.69
  6. Step 6: Final answer
    x = 134,396.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.