Home / 155,221.29-214,257.83-100,847.85

Finding the Fourth Proportional to 155,221.29, 214,257.83 and 100,847.85

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Solution

The fourth proportional to 155,221.29, 214,257.83 and 100,847.85 is: 139,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,221.29 : 214,257.83 = 100,847.85 : x
  2. Step 2: Convert to fraction form
    155,221.29/214,257.83 = 100,847.85/x
  3. Step 3: Cross multiply
    155,221.29x = 214,257.83 × 100,847.85
  4. Step 4: Simplify right side
    155,221.29x = 21,607,441,501.17
  5. Step 5: Solve for x
    x = 21,607,441,501.17/155,221.29
  6. Step 6: Final answer
    x = 139,204.11

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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.