Home / 135,538.40-187,048.94-75,108.90

Finding the Fourth Proportional to 135,538.40, 187,048.94 and 75,108.90

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Solution

The fourth proportional to 135,538.40, 187,048.94 and 75,108.90 is: 103,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,538.40 : 187,048.94 = 75,108.90 : x
  2. Step 2: Convert to fraction form
    135,538.40/187,048.94 = 75,108.90/x
  3. Step 3: Cross multiply
    135,538.40x = 187,048.94 × 75,108.90
  4. Step 4: Simplify right side
    135,538.40x = 14,049,040,129.57
  5. Step 5: Solve for x
    x = 14,049,040,129.57/135,538.40
  6. Step 6: Final answer
    x = 103,653.58

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1.5x scale

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.