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Finding the Fourth Proportional to 101,189.04, 139,640.22 and 55,869.84

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Solution

The fourth proportional to 101,189.04, 139,640.22 and 55,869.84 is: 77,100.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,189.04 : 139,640.22 = 55,869.84 : x
  2. Step 2: Convert to fraction form
    101,189.04/139,640.22 = 55,869.84/x
  3. Step 3: Cross multiply
    101,189.04x = 139,640.22 × 55,869.84
  4. Step 4: Simplify right side
    101,189.04x = 7,801,676,748.96
  5. Step 5: Solve for x
    x = 7,801,676,748.96/101,189.04
  6. Step 6: Final answer
    x = 77,100.02

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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.