Home / 135,729.34-187,306.20-75,309.16

Finding the Fourth Proportional to 135,729.34, 187,306.20 and 75,309.16

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Solution

The fourth proportional to 135,729.34, 187,306.20 and 75,309.16 is: 103,926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,729.34 : 187,306.20 = 75,309.16 : x
  2. Step 2: Convert to fraction form
    135,729.34/187,306.20 = 75,309.16/x
  3. Step 3: Cross multiply
    135,729.34x = 187,306.20 × 75,309.16
  4. Step 4: Simplify right side
    135,729.34x = 14,105,872,584.79
  5. Step 5: Solve for x
    x = 14,105,872,584.79/135,729.34
  6. Step 6: Final answer
    x = 103,926.48

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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.