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Finding the Fourth Proportional to 101,355.98, 139,879.85 and 58,911.75

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Solution

The fourth proportional to 101,355.98, 139,879.85 and 58,911.75 is: 81,303.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,355.98 : 139,879.85 = 58,911.75 : x
  2. Step 2: Convert to fraction form
    101,355.98/139,879.85 = 58,911.75/x
  3. Step 3: Cross multiply
    101,355.98x = 139,879.85 × 58,911.75
  4. Step 4: Simplify right side
    101,355.98x = 8,240,566,458.68
  5. Step 5: Solve for x
    x = 8,240,566,458.68/101,355.98
  6. Step 6: Final answer
    x = 81,303.21

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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.