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Finding the Fourth Proportional to 101,044.24, 139,438 and 55,722.20

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Solution

The fourth proportional to 101,044.24, 139,438 and 55,722.20 is: 76,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,044.24 : 139,438 = 55,722.20 : x
  2. Step 2: Convert to fraction form
    101,044.24/139,438 = 55,722.20/x
  3. Step 3: Cross multiply
    101,044.24x = 139,438 × 55,722.20
  4. Step 4: Simplify right side
    101,044.24x = 7,769,792,123.60
  5. Step 5: Solve for x
    x = 7,769,792,123.60/101,044.24
  6. Step 6: Final answer
    x = 76,894.95

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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.