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Finding the Fourth Proportional to 155,591, 214,702.82 and 87,586.24

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Solution

The fourth proportional to 155,591, 214,702.82 and 87,586.24 is: 120,861.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,591 : 214,702.82 = 87,586.24 : x
  2. Step 2: Convert to fraction form
    155,591/214,702.82 = 87,586.24/x
  3. Step 3: Cross multiply
    155,591x = 214,702.82 × 87,586.24
  4. Step 4: Simplify right side
    155,591x = 18,805,012,721.20
  5. Step 5: Solve for x
    x = 18,805,012,721.20/155,591
  6. Step 6: Final answer
    x = 120,861.83

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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.