Home / 120,010.89-165,621.20-66,295.47

Finding the Fourth Proportional to 120,010.89, 165,621.20 and 66,295.47

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Solution

The fourth proportional to 120,010.89, 165,621.20 and 66,295.47 is: 91,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,010.89 : 165,621.20 = 66,295.47 : x
  2. Step 2: Convert to fraction form
    120,010.89/165,621.20 = 66,295.47/x
  3. Step 3: Cross multiply
    120,010.89x = 165,621.20 × 66,295.47
  4. Step 4: Simplify right side
    120,010.89x = 10,979,934,964.49
  5. Step 5: Solve for x
    x = 10,979,934,964.49/120,010.89
  6. Step 6: Final answer
    x = 91,491.16

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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.