Home / 116,899.20-161,330.80-65,921.76

Finding the Fourth Proportional to 116,899.20, 161,330.80 and 65,921.76

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Solution

The fourth proportional to 116,899.20, 161,330.80 and 65,921.76 is: 90,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,899.20 : 161,330.80 = 65,921.76 : x
  2. Step 2: Convert to fraction form
    116,899.20/161,330.80 = 65,921.76/x
  3. Step 3: Cross multiply
    116,899.20x = 161,330.80 × 65,921.76
  4. Step 4: Simplify right side
    116,899.20x = 10,635,210,278.21
  5. Step 5: Solve for x
    x = 10,635,210,278.21/116,899.20
  6. Step 6: Final answer
    x = 90,977.61

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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.