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Finding the Fourth Proportional to 136,959.40, 205,439.10 and 115,964.20

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Solution

The fourth proportional to 136,959.40, 205,439.10 and 115,964.20 is: 173,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,959.40 : 205,439.10 = 115,964.20 : x
  2. Step 2: Convert to fraction form
    136,959.40/205,439.10 = 115,964.20/x
  3. Step 3: Cross multiply
    136,959.40x = 205,439.10 × 115,964.20
  4. Step 4: Simplify right side
    136,959.40x = 23,823,580,880.22
  5. Step 5: Solve for x
    x = 23,823,580,880.22/136,959.40
  6. Step 6: Final answer
    x = 173,946.30

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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.