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Finding the Fourth Proportional to 159,424.74, 220,011.78 and 99,028.44

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Solution

The fourth proportional to 159,424.74, 220,011.78 and 99,028.44 is: 136,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,424.74 : 220,011.78 = 99,028.44 : x
  2. Step 2: Convert to fraction form
    159,424.74/220,011.78 = 99,028.44/x
  3. Step 3: Cross multiply
    159,424.74x = 220,011.78 × 99,028.44
  4. Step 4: Simplify right side
    159,424.74x = 21,787,423,355.02
  5. Step 5: Solve for x
    x = 21,787,423,355.02/159,424.74
  6. Step 6: Final answer
    x = 136,662.75

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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.