Home / 101,039.24-139,442.10-55,721.36

Finding the Fourth Proportional to 101,039.24, 139,442.10 and 55,721.36

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Solution

The fourth proportional to 101,039.24, 139,442.10 and 55,721.36 is: 76,899.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,039.24 : 139,442.10 = 55,721.36 : x
  2. Step 2: Convert to fraction form
    101,039.24/139,442.10 = 55,721.36/x
  3. Step 3: Cross multiply
    101,039.24x = 139,442.10 × 55,721.36
  4. Step 4: Simplify right side
    101,039.24x = 7,769,903,453.26
  5. Step 5: Solve for x
    x = 7,769,903,453.26/101,039.24
  6. Step 6: Final answer
    x = 76,899.86

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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.