Home / 135,478.18-187,051.17-84,568.42

Finding the Fourth Proportional to 135,478.18, 187,051.17 and 84,568.42

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Solution

The fourth proportional to 135,478.18, 187,051.17 and 84,568.42 is: 116,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,478.18 : 187,051.17 = 84,568.42 : x
  2. Step 2: Convert to fraction form
    135,478.18/187,051.17 = 84,568.42/x
  3. Step 3: Cross multiply
    135,478.18x = 187,051.17 × 84,568.42
  4. Step 4: Simplify right side
    135,478.18x = 15,818,621,906.05
  5. Step 5: Solve for x
    x = 15,818,621,906.05/135,478.18
  6. Step 6: Final answer
    x = 116,761.40

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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.