Home / 161,965.28-223,516.83-90,343.76

Finding the Fourth Proportional to 161,965.28, 223,516.83 and 90,343.76

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Solution

The fourth proportional to 161,965.28, 223,516.83 and 90,343.76 is: 124,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,965.28 : 223,516.83 = 90,343.76 : x
  2. Step 2: Convert to fraction form
    161,965.28/223,516.83 = 90,343.76/x
  3. Step 3: Cross multiply
    161,965.28x = 223,516.83 × 90,343.76
  4. Step 4: Simplify right side
    161,965.28x = 20,193,349,727.90
  5. Step 5: Solve for x
    x = 20,193,349,727.90/161,965.28
  6. Step 6: Final answer
    x = 124,677.03

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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.