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Finding the Fourth Proportional to 185,959.80, 279,012.60 and 67,643.10

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Solution

The fourth proportional to 185,959.80, 279,012.60 and 67,643.10 is: 101,491.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,959.80 : 279,012.60 = 67,643.10 : x
  2. Step 2: Convert to fraction form
    185,959.80/279,012.60 = 67,643.10/x
  3. Step 3: Cross multiply
    185,959.80x = 279,012.60 × 67,643.10
  4. Step 4: Simplify right side
    185,959.80x = 18,873,277,203.06
  5. Step 5: Solve for x
    x = 18,873,277,203.06/185,959.80
  6. Step 6: Final answer
    x = 101,491.17

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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.