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Finding the Fourth Proportional to 108,929.88, 150,339.60 and 66,512.88

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Solution

The fourth proportional to 108,929.88, 150,339.60 and 66,512.88 is: 91,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,929.88 : 150,339.60 = 66,512.88 : x
  2. Step 2: Convert to fraction form
    108,929.88/150,339.60 = 66,512.88/x
  3. Step 3: Cross multiply
    108,929.88x = 150,339.60 × 66,512.88
  4. Step 4: Simplify right side
    108,929.88x = 9,999,519,774.05
  5. Step 5: Solve for x
    x = 9,999,519,774.05/108,929.88
  6. Step 6: Final answer
    x = 91,797.77

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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.