Home / 119,921.49-165,489.05-65,471.81

Finding the Fourth Proportional to 119,921.49, 165,489.05 and 65,471.81

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Solution

The fourth proportional to 119,921.49, 165,489.05 and 65,471.81 is: 90,349.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,921.49 : 165,489.05 = 65,471.81 : x
  2. Step 2: Convert to fraction form
    119,921.49/165,489.05 = 65,471.81/x
  3. Step 3: Cross multiply
    119,921.49x = 165,489.05 × 65,471.81
  4. Step 4: Simplify right side
    119,921.49x = 10,834,866,483.88
  5. Step 5: Solve for x
    x = 10,834,866,483.88/119,921.49
  6. Step 6: Final answer
    x = 90,349.67

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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.