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Finding the Fourth Proportional to 101,295.32, 139,657.62 and 69,408.86

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Solution

The fourth proportional to 101,295.32, 139,657.62 and 69,408.86 is: 95,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,295.32 : 139,657.62 = 69,408.86 : x
  2. Step 2: Convert to fraction form
    101,295.32/139,657.62 = 69,408.86/x
  3. Step 3: Cross multiply
    101,295.32x = 139,657.62 × 69,408.86
  4. Step 4: Simplify right side
    101,295.32x = 9,693,476,194.51
  5. Step 5: Solve for x
    x = 9,693,476,194.51/101,295.32
  6. Step 6: Final answer
    x = 95,695.20

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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.