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Finding the Fourth Proportional to 109,424.01, 150,996.10 and 61,689.09

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Solution

The fourth proportional to 109,424.01, 150,996.10 and 61,689.09 is: 85,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,424.01 : 150,996.10 = 61,689.09 : x
  2. Step 2: Convert to fraction form
    109,424.01/150,996.10 = 61,689.09/x
  3. Step 3: Cross multiply
    109,424.01x = 150,996.10 × 61,689.09
  4. Step 4: Simplify right side
    109,424.01x = 9,314,812,530.23
  5. Step 5: Solve for x
    x = 9,314,812,530.23/109,424.01
  6. Step 6: Final answer
    x = 85,125.85

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1.5x scale

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.