Home / 187,110.40-280,579.20-81,875.20

Finding the Fourth Proportional to 187,110.40, 280,579.20 and 81,875.20

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Solution

The fourth proportional to 187,110.40, 280,579.20 and 81,875.20 is: 122,774.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,110.40 : 280,579.20 = 81,875.20 : x
  2. Step 2: Convert to fraction form
    187,110.40/280,579.20 = 81,875.20/x
  3. Step 3: Cross multiply
    187,110.40x = 280,579.20 × 81,875.20
  4. Step 4: Simplify right side
    187,110.40x = 22,972,478,115.84
  5. Step 5: Solve for x
    x = 22,972,478,115.84/187,110.40
  6. Step 6: Final answer
    x = 122,774.99

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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.