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Finding the Fourth Proportional to 101,223.64, 139,678.02 and 58,773.88

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Solution

The fourth proportional to 101,223.64, 139,678.02 and 58,773.88 is: 81,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,223.64 : 139,678.02 = 58,773.88 : x
  2. Step 2: Convert to fraction form
    101,223.64/139,678.02 = 58,773.88/x
  3. Step 3: Cross multiply
    101,223.64x = 139,678.02 × 58,773.88
  4. Step 4: Simplify right side
    101,223.64x = 8,209,419,186.12
  5. Step 5: Solve for x
    x = 8,209,419,186.12/101,223.64
  6. Step 6: Final answer
    x = 81,101.80

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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.