Home / 117,288.30-161,856.12-66,299.24

Finding the Fourth Proportional to 117,288.30, 161,856.12 and 66,299.24

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Solution

The fourth proportional to 117,288.30, 161,856.12 and 66,299.24 is: 91,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,288.30 : 161,856.12 = 66,299.24 : x
  2. Step 2: Convert to fraction form
    117,288.30/161,856.12 = 66,299.24/x
  3. Step 3: Cross multiply
    117,288.30x = 161,856.12 × 66,299.24
  4. Step 4: Simplify right side
    117,288.30x = 10,730,937,745.35
  5. Step 5: Solve for x
    x = 10,730,937,745.35/117,288.30
  6. Step 6: Final answer
    x = 91,491.97

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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.