Home / 101,985.72-140,755.50-80,426.04

Finding the Fourth Proportional to 101,985.72, 140,755.50 and 80,426.04

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Solution

The fourth proportional to 101,985.72, 140,755.50 and 80,426.04 is: 110,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,985.72 : 140,755.50 = 80,426.04 : x
  2. Step 2: Convert to fraction form
    101,985.72/140,755.50 = 80,426.04/x
  3. Step 3: Cross multiply
    101,985.72x = 140,755.50 × 80,426.04
  4. Step 4: Simplify right side
    101,985.72x = 11,320,407,473.22
  5. Step 5: Solve for x
    x = 11,320,407,473.22/101,985.72
  6. Step 6: Final answer
    x = 110,999.93

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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.