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Finding the Fourth Proportional to 135,700.89, 187,270.22 and 75,269.56

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Solution

The fourth proportional to 135,700.89, 187,270.22 and 75,269.56 is: 103,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,700.89 : 187,270.22 = 75,269.56 : x
  2. Step 2: Convert to fraction form
    135,700.89/187,270.22 = 75,269.56/x
  3. Step 3: Cross multiply
    135,700.89x = 187,270.22 × 75,269.56
  4. Step 4: Simplify right side
    135,700.89x = 14,095,746,780.50
  5. Step 5: Solve for x
    x = 14,095,746,780.50/135,700.89
  6. Step 6: Final answer
    x = 103,873.65

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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.