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Finding the Fourth Proportional to 136,963.40, 205,445.10 and 115,968.20

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Solution

The fourth proportional to 136,963.40, 205,445.10 and 115,968.20 is: 173,952.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,963.40 : 205,445.10 = 115,968.20 : x
  2. Step 2: Convert to fraction form
    136,963.40/205,445.10 = 115,968.20/x
  3. Step 3: Cross multiply
    136,963.40x = 205,445.10 × 115,968.20
  4. Step 4: Simplify right side
    136,963.40x = 23,825,098,445.82
  5. Step 5: Solve for x
    x = 23,825,098,445.82/136,963.40
  6. Step 6: Final answer
    x = 173,952.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.