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Finding the Fourth Proportional to 100,835.52, 139,161.60 and 55,522.32

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Solution

The fourth proportional to 100,835.52, 139,161.60 and 55,522.32 is: 76,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,835.52 : 139,161.60 = 55,522.32 : x
  2. Step 2: Convert to fraction form
    100,835.52/139,161.60 = 55,522.32/x
  3. Step 3: Cross multiply
    100,835.52x = 139,161.60 × 55,522.32
  4. Step 4: Simplify right side
    100,835.52x = 7,726,574,886.91
  5. Step 5: Solve for x
    x = 7,726,574,886.91/100,835.52
  6. Step 6: Final answer
    x = 76,625.53

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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.