Home / 160,964.96-221,986.20-100,541.12

Finding the Fourth Proportional to 160,964.96, 221,986.20 and 100,541.12

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Solution

The fourth proportional to 160,964.96, 221,986.20 and 100,541.12 is: 138,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,964.96 : 221,986.20 = 100,541.12 : x
  2. Step 2: Convert to fraction form
    160,964.96/221,986.20 = 100,541.12/x
  3. Step 3: Cross multiply
    160,964.96x = 221,986.20 × 100,541.12
  4. Step 4: Simplify right side
    160,964.96x = 22,318,741,172.54
  5. Step 5: Solve for x
    x = 22,318,741,172.54/160,964.96
  6. Step 6: Final answer
    x = 138,655.90

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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.