Home / 135,800.78-187,427.61-79,212.17

Finding the Fourth Proportional to 135,800.78, 187,427.61 and 79,212.17

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Solution

The fourth proportional to 135,800.78, 187,427.61 and 79,212.17 is: 109,325.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,800.78 : 187,427.61 = 79,212.17 : x
  2. Step 2: Convert to fraction form
    135,800.78/187,427.61 = 79,212.17/x
  3. Step 3: Cross multiply
    135,800.78x = 187,427.61 × 79,212.17
  4. Step 4: Simplify right side
    135,800.78x = 14,846,547,706.01
  5. Step 5: Solve for x
    x = 14,846,547,706.01/135,800.78
  6. Step 6: Final answer
    x = 109,325.94

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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.