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Finding the Fourth Proportional to 101,338.03, 139,846.51 and 55,397.87

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Solution

The fourth proportional to 101,338.03, 139,846.51 and 55,397.87 is: 76,449.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,338.03 : 139,846.51 = 55,397.87 : x
  2. Step 2: Convert to fraction form
    101,338.03/139,846.51 = 55,397.87/x
  3. Step 3: Cross multiply
    101,338.03x = 139,846.51 × 55,397.87
  4. Step 4: Simplify right side
    101,338.03x = 7,747,198,503.94
  5. Step 5: Solve for x
    x = 7,747,198,503.94/101,338.03
  6. Step 6: Final answer
    x = 76,449.08

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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.