Home / 100,875.44-139,206.80-55,552.56

Finding the Fourth Proportional to 100,875.44, 139,206.80 and 55,552.56

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Solution

The fourth proportional to 100,875.44, 139,206.80 and 55,552.56 is: 76,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,875.44 : 139,206.80 = 55,552.56 : x
  2. Step 2: Convert to fraction form
    100,875.44/139,206.80 = 55,552.56/x
  3. Step 3: Cross multiply
    100,875.44x = 139,206.80 × 55,552.56
  4. Step 4: Simplify right side
    100,875.44x = 7,733,294,109.41
  5. Step 5: Solve for x
    x = 7,733,294,109.41/100,875.44
  6. Step 6: Final answer
    x = 76,661.81

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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.