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Finding the Fourth Proportional to 159,983.84, 220,806.04 and 91,995.54

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Solution

The fourth proportional to 159,983.84, 220,806.04 and 91,995.54 is: 126,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,983.84 : 220,806.04 = 91,995.54 : x
  2. Step 2: Convert to fraction form
    159,983.84/220,806.04 = 91,995.54/x
  3. Step 3: Cross multiply
    159,983.84x = 220,806.04 × 91,995.54
  4. Step 4: Simplify right side
    159,983.84x = 20,313,170,885.06
  5. Step 5: Solve for x
    x = 20,313,170,885.06/159,983.84
  6. Step 6: Final answer
    x = 126,970.14

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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.