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Finding the Fourth Proportional to 101,190.48, 139,647.54 and 55,874.90

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Solution

The fourth proportional to 101,190.48, 139,647.54 and 55,874.90 is: 77,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,190.48 : 139,647.54 = 55,874.90 : x
  2. Step 2: Convert to fraction form
    101,190.48/139,647.54 = 55,874.90/x
  3. Step 3: Cross multiply
    101,190.48x = 139,647.54 × 55,874.90
  4. Step 4: Simplify right side
    101,190.48x = 7,802,792,332.75
  5. Step 5: Solve for x
    x = 7,802,792,332.75/101,190.48
  6. Step 6: Final answer
    x = 77,109.94

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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.