Home / 187,143.68-280,692.48-81,943.04

Finding the Fourth Proportional to 187,143.68, 280,692.48 and 81,943.04

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Solution

The fourth proportional to 187,143.68, 280,692.48 and 81,943.04 is: 122,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,143.68 : 280,692.48 = 81,943.04 : x
  2. Step 2: Convert to fraction form
    187,143.68/280,692.48 = 81,943.04/x
  3. Step 3: Cross multiply
    187,143.68x = 280,692.48 × 81,943.04
  4. Step 4: Simplify right side
    187,143.68x = 23,000,795,116.34
  5. Step 5: Solve for x
    x = 23,000,795,116.34/187,143.68
  6. Step 6: Final answer
    x = 122,904.47

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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.