Home / 155,623.70-214,757.88-87,640.40

Finding the Fourth Proportional to 155,623.70, 214,757.88 and 87,640.40

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Solution

The fourth proportional to 155,623.70, 214,757.88 and 87,640.40 is: 120,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,623.70 : 214,757.88 = 87,640.40 : x
  2. Step 2: Convert to fraction form
    155,623.70/214,757.88 = 87,640.40/x
  3. Step 3: Cross multiply
    155,623.70x = 214,757.88 × 87,640.40
  4. Step 4: Simplify right side
    155,623.70x = 18,821,466,506.35
  5. Step 5: Solve for x
    x = 18,821,466,506.35/155,623.70
  6. Step 6: Final answer
    x = 120,942.16

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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.