Home / 135,564.66-187,079.09-75,135.42

Finding the Fourth Proportional to 135,564.66, 187,079.09 and 75,135.42

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Solution

The fourth proportional to 135,564.66, 187,079.09 and 75,135.42 is: 103,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,564.66 : 187,079.09 = 75,135.42 : x
  2. Step 2: Convert to fraction form
    135,564.66/187,079.09 = 75,135.42/x
  3. Step 3: Cross multiply
    135,564.66x = 187,079.09 × 75,135.42
  4. Step 4: Simplify right side
    135,564.66x = 14,056,265,624.69
  5. Step 5: Solve for x
    x = 14,056,265,624.69/135,564.66
  6. Step 6: Final answer
    x = 103,686.80

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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.