Home / 135,747.94-187,442.22-84,820

Finding the Fourth Proportional to 135,747.94, 187,442.22 and 84,820

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Solution

The fourth proportional to 135,747.94, 187,442.22 and 84,820 is: 117,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,747.94 : 187,442.22 = 84,820 : x
  2. Step 2: Convert to fraction form
    135,747.94/187,442.22 = 84,820/x
  3. Step 3: Cross multiply
    135,747.94x = 187,442.22 × 84,820
  4. Step 4: Simplify right side
    135,747.94x = 15,898,849,100.40
  5. Step 5: Solve for x
    x = 15,898,849,100.40/135,747.94
  6. Step 6: Final answer
    x = 117,120.37

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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.