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Finding the Fourth Proportional to 251,690.95, 347,340.81 and 136,976.97

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Solution

The fourth proportional to 251,690.95, 347,340.81 and 136,976.97 is: 189,032.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,690.95 : 347,340.81 = 136,976.97 : x
  2. Step 2: Convert to fraction form
    251,690.95/347,340.81 = 136,976.97/x
  3. Step 3: Cross multiply
    251,690.95x = 347,340.81 × 136,976.97
  4. Step 4: Simplify right side
    251,690.95x = 47,577,692,756.84
  5. Step 5: Solve for x
    x = 47,577,692,756.84/251,690.95
  6. Step 6: Final answer
    x = 189,032.20

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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.