Home / 187,139.05-280,819.75-68,893.43

Finding the Fourth Proportional to 187,139.05, 280,819.75 and 68,893.43

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Solution

The fourth proportional to 187,139.05, 280,819.75 and 68,893.43 is: 103,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,139.05 : 280,819.75 = 68,893.43 : x
  2. Step 2: Convert to fraction form
    187,139.05/280,819.75 = 68,893.43/x
  3. Step 3: Cross multiply
    187,139.05x = 280,819.75 × 68,893.43
  4. Step 4: Simplify right side
    187,139.05x = 19,346,635,395.16
  5. Step 5: Solve for x
    x = 19,346,635,395.16/187,139.05
  6. Step 6: Final answer
    x = 103,381.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.