Home / 135,647.34-187,148.52-81,911.94

Finding the Fourth Proportional to 135,647.34, 187,148.52 and 81,911.94

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Solution

The fourth proportional to 135,647.34, 187,148.52 and 81,911.94 is: 113,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,647.34 : 187,148.52 = 81,911.94 : x
  2. Step 2: Convert to fraction form
    135,647.34/187,148.52 = 81,911.94/x
  3. Step 3: Cross multiply
    135,647.34x = 187,148.52 × 81,911.94
  4. Step 4: Simplify right side
    135,647.34x = 15,329,698,341.33
  5. Step 5: Solve for x
    x = 15,329,698,341.33/135,647.34
  6. Step 6: Final answer
    x = 113,011.42

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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.