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Finding the Fourth Proportional to 154,969, 213,614.60 and 101,227.12

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Solution

The fourth proportional to 154,969, 213,614.60 and 101,227.12 is: 139,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,969 : 213,614.60 = 101,227.12 : x
  2. Step 2: Convert to fraction form
    154,969/213,614.60 = 101,227.12/x
  3. Step 3: Cross multiply
    154,969x = 213,614.60 × 101,227.12
  4. Step 4: Simplify right side
    154,969x = 21,623,590,747.95
  5. Step 5: Solve for x
    x = 21,623,590,747.95/154,969
  6. Step 6: Final answer
    x = 139,534.94

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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.