Home / 161,965.19-223,516.70-90,343.67

Finding the Fourth Proportional to 161,965.19, 223,516.70 and 90,343.67

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Solution

The fourth proportional to 161,965.19, 223,516.70 and 90,343.67 is: 124,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,965.19 : 223,516.70 = 90,343.67 : x
  2. Step 2: Convert to fraction form
    161,965.19/223,516.70 = 90,343.67/x
  3. Step 3: Cross multiply
    161,965.19x = 223,516.70 × 90,343.67
  4. Step 4: Simplify right side
    161,965.19x = 20,193,317,753.78
  5. Step 5: Solve for x
    x = 20,193,317,753.78/161,965.19
  6. Step 6: Final answer
    x = 124,676.90

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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.