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Finding the Fourth Proportional to 109,235.68, 150,745.56 and 61,489.76

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Solution

The fourth proportional to 109,235.68, 150,745.56 and 61,489.76 is: 84,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,235.68 : 150,745.56 = 61,489.76 : x
  2. Step 2: Convert to fraction form
    109,235.68/150,745.56 = 61,489.76/x
  3. Step 3: Cross multiply
    109,235.68x = 150,745.56 × 61,489.76
  4. Step 4: Simplify right side
    109,235.68x = 9,269,308,305.47
  5. Step 5: Solve for x
    x = 9,269,308,305.47/109,235.68
  6. Step 6: Final answer
    x = 84,856.05

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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.