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Finding the Fourth Proportional to 108,963, 150,334.38 and 66,500.28

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Solution

The fourth proportional to 108,963, 150,334.38 and 66,500.28 is: 91,749.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963 : 150,334.38 = 66,500.28 : x
  2. Step 2: Convert to fraction form
    108,963/150,334.38 = 66,500.28/x
  3. Step 3: Cross multiply
    108,963x = 150,334.38 × 66,500.28
  4. Step 4: Simplify right side
    108,963x = 9,997,278,363.63
  5. Step 5: Solve for x
    x = 9,997,278,363.63/108,963
  6. Step 6: Final answer
    x = 91,749.29

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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.