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Finding the Fourth Proportional to 171,122.20, 236,140.86 and 94,642

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Solution

The fourth proportional to 171,122.20, 236,140.86 and 94,642 is: 130,601.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,122.20 : 236,140.86 = 94,642 : x
  2. Step 2: Convert to fraction form
    171,122.20/236,140.86 = 94,642/x
  3. Step 3: Cross multiply
    171,122.20x = 236,140.86 × 94,642
  4. Step 4: Simplify right side
    171,122.20x = 22,348,843,272.12
  5. Step 5: Solve for x
    x = 22,348,843,272.12/171,122.20
  6. Step 6: Final answer
    x = 130,601.66

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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.