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Finding the Fourth Proportional to 101,201.50, 139,660.29 and 55,879.36

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Solution

The fourth proportional to 101,201.50, 139,660.29 and 55,879.36 is: 77,114.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,201.50 : 139,660.29 = 55,879.36 : x
  2. Step 2: Convert to fraction form
    101,201.50/139,660.29 = 55,879.36/x
  3. Step 3: Cross multiply
    101,201.50x = 139,660.29 × 55,879.36
  4. Step 4: Simplify right side
    101,201.50x = 7,804,127,622.61
  5. Step 5: Solve for x
    x = 7,804,127,622.61/101,201.50
  6. Step 6: Final answer
    x = 77,114.74

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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.