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Finding the Fourth Proportional to 146,145, 201,680.28 and 79,077

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Solution

The fourth proportional to 146,145, 201,680.28 and 79,077 is: 109,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,145 : 201,680.28 = 79,077 : x
  2. Step 2: Convert to fraction form
    146,145/201,680.28 = 79,077/x
  3. Step 3: Cross multiply
    146,145x = 201,680.28 × 79,077
  4. Step 4: Simplify right side
    146,145x = 15,948,271,501.56
  5. Step 5: Solve for x
    x = 15,948,271,501.56/146,145
  6. Step 6: Final answer
    x = 109,126.36

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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.