Home / 159,669.28-220,333.55-91,638.38

Finding the Fourth Proportional to 159,669.28, 220,333.55 and 91,638.38

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Solution

The fourth proportional to 159,669.28, 220,333.55 and 91,638.38 is: 126,455.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,669.28 : 220,333.55 = 91,638.38 : x
  2. Step 2: Convert to fraction form
    159,669.28/220,333.55 = 91,638.38/x
  3. Step 3: Cross multiply
    159,669.28x = 220,333.55 × 91,638.38
  4. Step 4: Simplify right side
    159,669.28x = 20,191,008,950.38
  5. Step 5: Solve for x
    x = 20,191,008,950.38/159,669.28
  6. Step 6: Final answer
    x = 126,455.19

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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.