Home / 135,689.07-187,262.46-75,279.18

Finding the Fourth Proportional to 135,689.07, 187,262.46 and 75,279.18

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Solution

The fourth proportional to 135,689.07, 187,262.46 and 75,279.18 is: 103,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,689.07 : 187,262.46 = 75,279.18 : x
  2. Step 2: Convert to fraction form
    135,689.07/187,262.46 = 75,279.18/x
  3. Step 3: Cross multiply
    135,689.07x = 187,262.46 × 75,279.18
  4. Step 4: Simplify right side
    135,689.07x = 14,096,964,433.58
  5. Step 5: Solve for x
    x = 14,096,964,433.58/135,689.07
  6. Step 6: Final answer
    x = 103,891.67

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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.