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Finding the Fourth Proportional to 101,189.54, 139,649.92 and 55,872.02

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Solution

The fourth proportional to 101,189.54, 139,649.92 and 55,872.02 is: 77,108.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,189.54 : 139,649.92 = 55,872.02 : x
  2. Step 2: Convert to fraction form
    101,189.54/139,649.92 = 55,872.02/x
  3. Step 3: Cross multiply
    101,189.54x = 139,649.92 × 55,872.02
  4. Step 4: Simplify right side
    101,189.54x = 7,802,523,123.24
  5. Step 5: Solve for x
    x = 7,802,523,123.24/101,189.54
  6. Step 6: Final answer
    x = 77,108.00

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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.