Home / 135,839.72-187,449.40-75,405.58

Finding the Fourth Proportional to 135,839.72, 187,449.40 and 75,405.58

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Solution

The fourth proportional to 135,839.72, 187,449.40 and 75,405.58 is: 104,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,839.72 : 187,449.40 = 75,405.58 : x
  2. Step 2: Convert to fraction form
    135,839.72/187,449.40 = 75,405.58/x
  3. Step 3: Cross multiply
    135,839.72x = 187,449.40 × 75,405.58
  4. Step 4: Simplify right side
    135,839.72x = 14,134,730,727.65
  5. Step 5: Solve for x
    x = 14,134,730,727.65/135,839.72
  6. Step 6: Final answer
    x = 104,054.47

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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.