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Finding the Fourth Proportional to 109,145.92, 150,610.72 and 61,398.24

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Solution

The fourth proportional to 109,145.92, 150,610.72 and 61,398.24 is: 84,723.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,145.92 : 150,610.72 = 61,398.24 : x
  2. Step 2: Convert to fraction form
    109,145.92/150,610.72 = 61,398.24/x
  3. Step 3: Cross multiply
    109,145.92x = 150,610.72 × 61,398.24
  4. Step 4: Simplify right side
    109,145.92x = 9,247,233,133.13
  5. Step 5: Solve for x
    x = 9,247,233,133.13/109,145.92
  6. Step 6: Final answer
    x = 84,723.58

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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.