Home / 100,873.15-139,205.94-55,552.53

Finding the Fourth Proportional to 100,873.15, 139,205.94 and 55,552.53

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Solution

The fourth proportional to 100,873.15, 139,205.94 and 55,552.53 is: 76,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,873.15 : 139,205.94 = 55,552.53 : x
  2. Step 2: Convert to fraction form
    100,873.15/139,205.94 = 55,552.53/x
  3. Step 3: Cross multiply
    100,873.15x = 139,205.94 × 55,552.53
  4. Step 4: Simplify right side
    100,873.15x = 7,733,242,784.21
  5. Step 5: Solve for x
    x = 7,733,242,784.21/100,873.15
  6. Step 6: Final answer
    x = 76,663.05

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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.