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Finding the Fourth Proportional to 101,442.67, 139,995.03 and 56,119.89

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Solution

The fourth proportional to 101,442.67, 139,995.03 and 56,119.89 is: 77,447.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,442.67 : 139,995.03 = 56,119.89 : x
  2. Step 2: Convert to fraction form
    101,442.67/139,995.03 = 56,119.89/x
  3. Step 3: Cross multiply
    101,442.67x = 139,995.03 × 56,119.89
  4. Step 4: Simplify right side
    101,442.67x = 7,856,504,984.17
  5. Step 5: Solve for x
    x = 7,856,504,984.17/101,442.67
  6. Step 6: Final answer
    x = 77,447.73

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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.