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Finding the Fourth Proportional to 148,458, 222,129 and 104,171.16

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Solution

The fourth proportional to 148,458, 222,129 and 104,171.16 is: 155,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,458 : 222,129 = 104,171.16 : x
  2. Step 2: Convert to fraction form
    148,458/222,129 = 104,171.16/x
  3. Step 3: Cross multiply
    148,458x = 222,129 × 104,171.16
  4. Step 4: Simplify right side
    148,458x = 23,139,435,599.64
  5. Step 5: Solve for x
    x = 23,139,435,599.64/148,458
  6. Step 6: Final answer
    x = 155,865.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.