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Finding the Fourth Proportional to 101,277.90, 139,771.67 and 55,959.84

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Solution

The fourth proportional to 101,277.90, 139,771.67 and 55,959.84 is: 77,229.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,277.90 : 139,771.67 = 55,959.84 : x
  2. Step 2: Convert to fraction form
    101,277.90/139,771.67 = 55,959.84/x
  3. Step 3: Cross multiply
    101,277.90x = 139,771.67 × 55,959.84
  4. Step 4: Simplify right side
    101,277.90x = 7,821,600,009.93
  5. Step 5: Solve for x
    x = 7,821,600,009.93/101,277.90
  6. Step 6: Final answer
    x = 77,229.09

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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.