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Finding the Fourth Proportional to 159,660.93, 220,346.87 and 91,686.81

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Solution

The fourth proportional to 159,660.93, 220,346.87 and 91,686.81 is: 126,536.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,660.93 : 220,346.87 = 91,686.81 : x
  2. Step 2: Convert to fraction form
    159,660.93/220,346.87 = 91,686.81/x
  3. Step 3: Cross multiply
    159,660.93x = 220,346.87 × 91,686.81
  4. Step 4: Simplify right side
    159,660.93x = 20,202,901,145.35
  5. Step 5: Solve for x
    x = 20,202,901,145.35/159,660.93
  6. Step 6: Final answer
    x = 126,536.29

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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.