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Finding the Fourth Proportional to 153,881.80, 230,628.30 and 137,163.40

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Solution

The fourth proportional to 153,881.80, 230,628.30 and 137,163.40 is: 205,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,881.80 : 230,628.30 = 137,163.40 : x
  2. Step 2: Convert to fraction form
    153,881.80/230,628.30 = 137,163.40/x
  3. Step 3: Cross multiply
    153,881.80x = 230,628.30 × 137,163.40
  4. Step 4: Simplify right side
    153,881.80x = 31,633,761,764.22
  5. Step 5: Solve for x
    x = 31,633,761,764.22/153,881.80
  6. Step 6: Final answer
    x = 205,571.82

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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.