Home / 187,139.15-280,819.89-68,893.52

Finding the Fourth Proportional to 187,139.15, 280,819.89 and 68,893.52

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Solution

The fourth proportional to 187,139.15, 280,819.89 and 68,893.52 is: 103,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,139.15 : 280,819.89 = 68,893.52 : x
  2. Step 2: Convert to fraction form
    187,139.15/280,819.89 = 68,893.52/x
  3. Step 3: Cross multiply
    187,139.15x = 280,819.89 × 68,893.52
  4. Step 4: Simplify right side
    187,139.15x = 19,346,671,410.16
  5. Step 5: Solve for x
    x = 19,346,671,410.16/187,139.15
  6. Step 6: Final answer
    x = 103,381.21

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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.