Home / 158,534.28-218,777.25-86,912.76

Finding the Fourth Proportional to 158,534.28, 218,777.25 and 86,912.76

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Solution

The fourth proportional to 158,534.28, 218,777.25 and 86,912.76 is: 119,939.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,534.28 : 218,777.25 = 86,912.76 : x
  2. Step 2: Convert to fraction form
    158,534.28/218,777.25 = 86,912.76/x
  3. Step 3: Cross multiply
    158,534.28x = 218,777.25 × 86,912.76
  4. Step 4: Simplify right side
    158,534.28x = 19,014,535,769.05
  5. Step 5: Solve for x
    x = 19,014,535,769.05/158,534.28
  6. Step 6: Final answer
    x = 119,939.59

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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.