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Finding the Fourth Proportional to 135,898.48, 187,628.61 and 88,287.49

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Solution

The fourth proportional to 135,898.48, 187,628.61 and 88,287.49 is: 121,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,898.48 : 187,628.61 = 88,287.49 : x
  2. Step 2: Convert to fraction form
    135,898.48/187,628.61 = 88,287.49/x
  3. Step 3: Cross multiply
    135,898.48x = 187,628.61 × 88,287.49
  4. Step 4: Simplify right side
    135,898.48x = 16,565,259,029.09
  5. Step 5: Solve for x
    x = 16,565,259,029.09/135,898.48
  6. Step 6: Final answer
    x = 121,894.37

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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.