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Finding the Fourth Proportional to 101,162.06, 139,603.65 and 55,840.06

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Solution

The fourth proportional to 101,162.06, 139,603.65 and 55,840.06 is: 77,059.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,162.06 : 139,603.65 = 55,840.06 : x
  2. Step 2: Convert to fraction form
    101,162.06/139,603.65 = 55,840.06/x
  3. Step 3: Cross multiply
    101,162.06x = 139,603.65 × 55,840.06
  4. Step 4: Simplify right side
    101,162.06x = 7,795,475,494.20
  5. Step 5: Solve for x
    x = 7,795,475,494.20/101,162.06
  6. Step 6: Final answer
    x = 77,059.28

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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.