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Finding the Fourth Proportional to 101,330.22, 139,836.26 and 55,389.93

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Solution

The fourth proportional to 101,330.22, 139,836.26 and 55,389.93 is: 76,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,330.22 : 139,836.26 = 55,389.93 : x
  2. Step 2: Convert to fraction form
    101,330.22/139,836.26 = 55,389.93/x
  3. Step 3: Cross multiply
    101,330.22x = 139,836.26 × 55,389.93
  4. Step 4: Simplify right side
    101,330.22x = 7,745,520,375.91
  5. Step 5: Solve for x
    x = 7,745,520,375.91/101,330.22
  6. Step 6: Final answer
    x = 76,438.40

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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.