Home / 130,910.82-180,659.34-72,773.03

Finding the Fourth Proportional to 130,910.82, 180,659.34 and 72,773.03

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Solution

The fourth proportional to 130,910.82, 180,659.34 and 72,773.03 is: 100,428.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,910.82 : 180,659.34 = 72,773.03 : x
  2. Step 2: Convert to fraction form
    130,910.82/180,659.34 = 72,773.03/x
  3. Step 3: Cross multiply
    130,910.82x = 180,659.34 × 72,773.03
  4. Step 4: Simplify right side
    130,910.82x = 13,147,126,666.30
  5. Step 5: Solve for x
    x = 13,147,126,666.30/130,910.82
  6. Step 6: Final answer
    x = 100,428.11

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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.