Home / 100,833.33-139,150.94-55,512.21

Finding the Fourth Proportional to 100,833.33, 139,150.94 and 55,512.21

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Solution

The fourth proportional to 100,833.33, 139,150.94 and 55,512.21 is: 76,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,833.33 : 139,150.94 = 55,512.21 : x
  2. Step 2: Convert to fraction form
    100,833.33/139,150.94 = 55,512.21/x
  3. Step 3: Cross multiply
    100,833.33x = 139,150.94 × 55,512.21
  4. Step 4: Simplify right side
    100,833.33x = 7,724,575,925.42
  5. Step 5: Solve for x
    x = 7,724,575,925.42/100,833.33
  6. Step 6: Final answer
    x = 76,607.37

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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.