Home / 101,122.12-139,548.42-55,800.09

Finding the Fourth Proportional to 101,122.12, 139,548.42 and 55,800.09

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Solution

The fourth proportional to 101,122.12, 139,548.42 and 55,800.09 is: 77,004.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,122.12 : 139,548.42 = 55,800.09 : x
  2. Step 2: Convert to fraction form
    101,122.12/139,548.42 = 55,800.09/x
  3. Step 3: Cross multiply
    101,122.12x = 139,548.42 × 55,800.09
  4. Step 4: Simplify right side
    101,122.12x = 7,786,814,395.36
  5. Step 5: Solve for x
    x = 7,786,814,395.36/101,122.12
  6. Step 6: Final answer
    x = 77,004.06

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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.