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Finding the Fourth Proportional to 101,287.17, 139,775.76 and 55,968.28

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Solution

The fourth proportional to 101,287.17, 139,775.76 and 55,968.28 is: 77,235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,287.17 : 139,775.76 = 55,968.28 : x
  2. Step 2: Convert to fraction form
    101,287.17/139,775.76 = 55,968.28/x
  3. Step 3: Cross multiply
    101,287.17x = 139,775.76 × 55,968.28
  4. Step 4: Simplify right side
    101,287.17x = 7,823,008,523.45
  5. Step 5: Solve for x
    x = 7,823,008,523.45/101,287.17
  6. Step 6: Final answer
    x = 77,235.93

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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.