Home / 155,638.35-214,772.12-91,982.07

Finding the Fourth Proportional to 155,638.35, 214,772.12 and 91,982.07

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Solution

The fourth proportional to 155,638.35, 214,772.12 and 91,982.07 is: 126,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,638.35 : 214,772.12 = 91,982.07 : x
  2. Step 2: Convert to fraction form
    155,638.35/214,772.12 = 91,982.07/x
  3. Step 3: Cross multiply
    155,638.35x = 214,772.12 × 91,982.07
  4. Step 4: Simplify right side
    155,638.35x = 19,755,183,715.98
  5. Step 5: Solve for x
    x = 19,755,183,715.98/155,638.35
  6. Step 6: Final answer
    x = 126,930.05

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1.5x scale

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.