Home / 135,707.39-187,279.20-75,276.07

Finding the Fourth Proportional to 135,707.39, 187,279.20 and 75,276.07

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Solution

The fourth proportional to 135,707.39, 187,279.20 and 75,276.07 is: 103,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,707.39 : 187,279.20 = 75,276.07 : x
  2. Step 2: Convert to fraction form
    135,707.39/187,279.20 = 75,276.07/x
  3. Step 3: Cross multiply
    135,707.39x = 187,279.20 × 75,276.07
  4. Step 4: Simplify right side
    135,707.39x = 14,097,642,168.74
  5. Step 5: Solve for x
    x = 14,097,642,168.74/135,707.39
  6. Step 6: Final answer
    x = 103,882.64

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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.