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Finding the Fourth Proportional to 151,574.72, 227,427.60 and 81,372

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Solution

The fourth proportional to 151,574.72, 227,427.60 and 81,372 is: 122,093.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,574.72 : 227,427.60 = 81,372 : x
  2. Step 2: Convert to fraction form
    151,574.72/227,427.60 = 81,372/x
  3. Step 3: Cross multiply
    151,574.72x = 227,427.60 × 81,372
  4. Step 4: Simplify right side
    151,574.72x = 18,506,238,667.20
  5. Step 5: Solve for x
    x = 18,506,238,667.20/151,574.72
  6. Step 6: Final answer
    x = 122,093.17

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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.