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Finding the Fourth Proportional to 101,177.56, 139,626.16 and 55,855.57

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Solution

The fourth proportional to 101,177.56, 139,626.16 and 55,855.57 is: 77,081.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,177.56 : 139,626.16 = 55,855.57 : x
  2. Step 2: Convert to fraction form
    101,177.56/139,626.16 = 55,855.57/x
  3. Step 3: Cross multiply
    101,177.56x = 139,626.16 × 55,855.57
  4. Step 4: Simplify right side
    101,177.56x = 7,798,898,265.01
  5. Step 5: Solve for x
    x = 7,798,898,265.01/101,177.56
  6. Step 6: Final answer
    x = 77,081.31

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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.