Home / 149,065.32-205,691.42-100,772.30

Finding the Fourth Proportional to 149,065.32, 205,691.42 and 100,772.30

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Solution

The fourth proportional to 149,065.32, 205,691.42 and 100,772.30 is: 139,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,065.32 : 205,691.42 = 100,772.30 : x
  2. Step 2: Convert to fraction form
    149,065.32/205,691.42 = 100,772.30/x
  3. Step 3: Cross multiply
    149,065.32x = 205,691.42 × 100,772.30
  4. Step 4: Simplify right side
    149,065.32x = 20,727,998,249.83
  5. Step 5: Solve for x
    x = 20,727,998,249.83/149,065.32
  6. Step 6: Final answer
    x = 139,053.12

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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.