Home / 100,864.53-139,194.02-55,544.12

Finding the Fourth Proportional to 100,864.53, 139,194.02 and 55,544.12

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Solution

The fourth proportional to 100,864.53, 139,194.02 and 55,544.12 is: 76,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,864.53 : 139,194.02 = 55,544.12 : x
  2. Step 2: Convert to fraction form
    100,864.53/139,194.02 = 55,544.12/x
  3. Step 3: Cross multiply
    100,864.53x = 139,194.02 × 55,544.12
  4. Step 4: Simplify right side
    100,864.53x = 7,731,409,550.30
  5. Step 5: Solve for x
    x = 7,731,409,550.30/100,864.53
  6. Step 6: Final answer
    x = 76,651.42

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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.