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Finding the Fourth Proportional to 154,851.89, 213,724.78 and 101,043.49

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Solution

The fourth proportional to 154,851.89, 213,724.78 and 101,043.49 is: 139,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,851.89 : 213,724.78 = 101,043.49 : x
  2. Step 2: Convert to fraction form
    154,851.89/213,724.78 = 101,043.49/x
  3. Step 3: Cross multiply
    154,851.89x = 213,724.78 × 101,043.49
  4. Step 4: Simplify right side
    154,851.89x = 21,595,497,670.68
  5. Step 5: Solve for x
    x = 21,595,497,670.68/154,851.89
  6. Step 6: Final answer
    x = 139,459.05

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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.