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Finding the Fourth Proportional to 123,795.61, 185,390.57 and 111,814.68

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Solution

The fourth proportional to 123,795.61, 185,390.57 and 111,814.68 is: 167,448.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,795.61 : 185,390.57 = 111,814.68 : x
  2. Step 2: Convert to fraction form
    123,795.61/185,390.57 = 111,814.68/x
  3. Step 3: Cross multiply
    123,795.61x = 185,390.57 × 111,814.68
  4. Step 4: Simplify right side
    123,795.61x = 20,729,387,259.57
  5. Step 5: Solve for x
    x = 20,729,387,259.57/123,795.61
  6. Step 6: Final answer
    x = 167,448.48

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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.