Home / 155,435.42-214,508.76-91,771.85

Finding the Fourth Proportional to 155,435.42, 214,508.76 and 91,771.85

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Solution

The fourth proportional to 155,435.42, 214,508.76 and 91,771.85 is: 126,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,435.42 : 214,508.76 = 91,771.85 : x
  2. Step 2: Convert to fraction form
    155,435.42/214,508.76 = 91,771.85/x
  3. Step 3: Cross multiply
    155,435.42x = 214,508.76 × 91,771.85
  4. Step 4: Simplify right side
    155,435.42x = 19,685,865,938.53
  5. Step 5: Solve for x
    x = 19,685,865,938.53/155,435.42
  6. Step 6: Final answer
    x = 126,649.80

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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.