Home / 135,865.76-187,516.89-79,266.20

Finding the Fourth Proportional to 135,865.76, 187,516.89 and 79,266.20

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Solution

The fourth proportional to 135,865.76, 187,516.89 and 79,266.20 is: 109,400.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,865.76 : 187,516.89 = 79,266.20 : x
  2. Step 2: Convert to fraction form
    135,865.76/187,516.89 = 79,266.20/x
  3. Step 3: Cross multiply
    135,865.76x = 187,516.89 × 79,266.20
  4. Step 4: Simplify right side
    135,865.76x = 14,863,750,368.53
  5. Step 5: Solve for x
    x = 14,863,750,368.53/135,865.76
  6. Step 6: Final answer
    x = 109,400.27

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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.