Home / 155,279.29-214,280.43-87,299.12

Finding the Fourth Proportional to 155,279.29, 214,280.43 and 87,299.12

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Solution

The fourth proportional to 155,279.29, 214,280.43 and 87,299.12 is: 120,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,279.29 : 214,280.43 = 87,299.12 : x
  2. Step 2: Convert to fraction form
    155,279.29/214,280.43 = 87,299.12/x
  3. Step 3: Cross multiply
    155,279.29x = 214,280.43 × 87,299.12
  4. Step 4: Simplify right side
    155,279.29x = 18,706,492,972.22
  5. Step 5: Solve for x
    x = 18,706,492,972.22/155,279.29
  6. Step 6: Final answer
    x = 120,469.98

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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.