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Finding the Fourth Proportional to 101,307.38, 139,804.25 and 58,868.64

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Solution

The fourth proportional to 101,307.38, 139,804.25 and 58,868.64 is: 81,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,307.38 : 139,804.25 = 58,868.64 : x
  2. Step 2: Convert to fraction form
    101,307.38/139,804.25 = 58,868.64/x
  3. Step 3: Cross multiply
    101,307.38x = 139,804.25 × 58,868.64
  4. Step 4: Simplify right side
    101,307.38x = 8,230,085,769.38
  5. Step 5: Solve for x
    x = 8,230,085,769.38/101,307.38
  6. Step 6: Final answer
    x = 81,238.76

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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.