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Finding the Fourth Proportional to 202,693.76, 279,726.72 and 122,147.36

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Solution

The fourth proportional to 202,693.76, 279,726.72 and 122,147.36 is: 168,568.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,693.76 : 279,726.72 = 122,147.36 : x
  2. Step 2: Convert to fraction form
    202,693.76/279,726.72 = 122,147.36/x
  3. Step 3: Cross multiply
    202,693.76x = 279,726.72 × 122,147.36
  4. Step 4: Simplify right side
    202,693.76x = 34,167,880,369.46
  5. Step 5: Solve for x
    x = 34,167,880,369.46/202,693.76
  6. Step 6: Final answer
    x = 168,568.98

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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.