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Finding the Fourth Proportional to 131,309, 180,681.52 and 127,634.84

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Solution

The fourth proportional to 131,309, 180,681.52 and 127,634.84 is: 175,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,309 : 180,681.52 = 127,634.84 : x
  2. Step 2: Convert to fraction form
    131,309/180,681.52 = 127,634.84/x
  3. Step 3: Cross multiply
    131,309x = 180,681.52 × 127,634.84
  4. Step 4: Simplify right side
    131,309x = 23,061,256,896.16
  5. Step 5: Solve for x
    x = 23,061,256,896.16/131,309
  6. Step 6: Final answer
    x = 175,625.87

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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.