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Finding the Fourth Proportional to 101,098.54, 139,515.03 and 55,776.89

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Solution

The fourth proportional to 101,098.54, 139,515.03 and 55,776.89 is: 76,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,098.54 : 139,515.03 = 55,776.89 : x
  2. Step 2: Convert to fraction form
    101,098.54/139,515.03 = 55,776.89/x
  3. Step 3: Cross multiply
    101,098.54x = 139,515.03 × 55,776.89
  4. Step 4: Simplify right side
    101,098.54x = 7,781,714,481.66
  5. Step 5: Solve for x
    x = 7,781,714,481.66/101,098.54
  6. Step 6: Final answer
    x = 76,971.58

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1.5x scale

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.