Home / 120,227.63-165,899.78-66,505.35

Finding the Fourth Proportional to 120,227.63, 165,899.78 and 66,505.35

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Solution

The fourth proportional to 120,227.63, 165,899.78 and 66,505.35 is: 91,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,227.63 : 165,899.78 = 66,505.35 : x
  2. Step 2: Convert to fraction form
    120,227.63/165,899.78 = 66,505.35/x
  3. Step 3: Cross multiply
    120,227.63x = 165,899.78 × 66,505.35
  4. Step 4: Simplify right side
    120,227.63x = 11,033,223,472.82
  5. Step 5: Solve for x
    x = 11,033,223,472.82/120,227.63
  6. Step 6: Final answer
    x = 91,769.45

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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.