Home / 107,721.08-161,526.94-80,820.98

Finding the Fourth Proportional to 107,721.08, 161,526.94 and 80,820.98

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Solution

The fourth proportional to 107,721.08, 161,526.94 and 80,820.98 is: 121,190.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.08 : 161,526.94 = 80,820.98 : x
  2. Step 2: Convert to fraction form
    107,721.08/161,526.94 = 80,820.98/x
  3. Step 3: Cross multiply
    107,721.08x = 161,526.94 × 80,820.98
  4. Step 4: Simplify right side
    107,721.08x = 13,054,765,587.20
  5. Step 5: Solve for x
    x = 13,054,765,587.20/107,721.08
  6. Step 6: Final answer
    x = 121,190.44

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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.