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Finding the Fourth Proportional to 122,399.29, 168,927.83 and 68,687.47

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Solution

The fourth proportional to 122,399.29, 168,927.83 and 68,687.47 is: 94,798.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,399.29 : 168,927.83 = 68,687.47 : x
  2. Step 2: Convert to fraction form
    122,399.29/168,927.83 = 68,687.47/x
  3. Step 3: Cross multiply
    122,399.29x = 168,927.83 × 68,687.47
  4. Step 4: Simplify right side
    122,399.29x = 11,603,225,255.29
  5. Step 5: Solve for x
    x = 11,603,225,255.29/122,399.29
  6. Step 6: Final answer
    x = 94,798.14

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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.