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Finding the Fourth Proportional to 108,963.64, 150,442.45 and 68,189.76

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Solution

The fourth proportional to 108,963.64, 150,442.45 and 68,189.76 is: 94,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.64 : 150,442.45 = 68,189.76 : x
  2. Step 2: Convert to fraction form
    108,963.64/150,442.45 = 68,189.76/x
  3. Step 3: Cross multiply
    108,963.64x = 150,442.45 × 68,189.76
  4. Step 4: Simplify right side
    108,963.64x = 10,258,634,559.31
  5. Step 5: Solve for x
    x = 10,258,634,559.31/108,963.64
  6. Step 6: Final answer
    x = 94,147.32

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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.