Home / 100,981.78-151,467.18-30,855.58

Finding the Fourth Proportional to 100,981.78, 151,467.18 and 30,855.58

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Solution

The fourth proportional to 100,981.78, 151,467.18 and 30,855.58 is: 46,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,981.78 : 151,467.18 = 30,855.58 : x
  2. Step 2: Convert to fraction form
    100,981.78/151,467.18 = 30,855.58/x
  3. Step 3: Cross multiply
    100,981.78x = 151,467.18 × 30,855.58
  4. Step 4: Simplify right side
    100,981.78x = 4,673,607,689.86
  5. Step 5: Solve for x
    x = 4,673,607,689.86/100,981.78
  6. Step 6: Final answer
    x = 46,281.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.