Home / 135,785.60-187,341.12-79,185.92

Finding the Fourth Proportional to 135,785.60, 187,341.12 and 79,185.92

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Solution

The fourth proportional to 135,785.60, 187,341.12 and 79,185.92 is: 109,251.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,785.60 : 187,341.12 = 79,185.92 : x
  2. Step 2: Convert to fraction form
    135,785.60/187,341.12 = 79,185.92/x
  3. Step 3: Cross multiply
    135,785.60x = 187,341.12 × 79,185.92
  4. Step 4: Simplify right side
    135,785.60x = 14,834,778,941.03
  5. Step 5: Solve for x
    x = 14,834,778,941.03/135,785.60
  6. Step 6: Final answer
    x = 109,251.49

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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.