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Finding the Fourth Proportional to 101,120.61, 139,546.26 and 55,798.56

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Solution

The fourth proportional to 101,120.61, 139,546.26 and 55,798.56 is: 77,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,120.61 : 139,546.26 = 55,798.56 : x
  2. Step 2: Convert to fraction form
    101,120.61/139,546.26 = 55,798.56/x
  3. Step 3: Cross multiply
    101,120.61x = 139,546.26 × 55,798.56
  4. Step 4: Simplify right side
    101,120.61x = 7,786,480,361.39
  5. Step 5: Solve for x
    x = 7,786,480,361.39/101,120.61
  6. Step 6: Final answer
    x = 77,001.91

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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.