Home / 135,992.59-187,658.75-78,635.62

Finding the Fourth Proportional to 135,992.59, 187,658.75 and 78,635.62

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Solution

The fourth proportional to 135,992.59, 187,658.75 and 78,635.62 is: 108,510.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,992.59 : 187,658.75 = 78,635.62 : x
  2. Step 2: Convert to fraction form
    135,992.59/187,658.75 = 78,635.62/x
  3. Step 3: Cross multiply
    135,992.59x = 187,658.75 × 78,635.62
  4. Step 4: Simplify right side
    135,992.59x = 14,756,662,585.84
  5. Step 5: Solve for x
    x = 14,756,662,585.84/135,992.59
  6. Step 6: Final answer
    x = 108,510.79

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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.