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Finding the Fourth Proportional to 101,647.56, 140,281.02 and 61,371.12

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Solution

The fourth proportional to 101,647.56, 140,281.02 and 61,371.12 is: 84,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,647.56 : 140,281.02 = 61,371.12 : x
  2. Step 2: Convert to fraction form
    101,647.56/140,281.02 = 61,371.12/x
  3. Step 3: Cross multiply
    101,647.56x = 140,281.02 × 61,371.12
  4. Step 4: Simplify right side
    101,647.56x = 8,609,203,312.14
  5. Step 5: Solve for x
    x = 8,609,203,312.14/101,647.56
  6. Step 6: Final answer
    x = 84,696.61

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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.