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Finding the Fourth Proportional to 108,859.29, 150,242.22 and 66,442.47

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Solution

The fourth proportional to 108,859.29, 150,242.22 and 66,442.47 is: 91,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,859.29 : 150,242.22 = 66,442.47 : x
  2. Step 2: Convert to fraction form
    108,859.29/150,242.22 = 66,442.47/x
  3. Step 3: Cross multiply
    108,859.29x = 150,242.22 × 66,442.47
  4. Step 4: Simplify right side
    108,859.29x = 9,982,464,195.08
  5. Step 5: Solve for x
    x = 9,982,464,195.08/108,859.29
  6. Step 6: Final answer
    x = 91,700.62

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1.5x scale

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.