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Finding the Fourth Proportional to 155,480.98, 214,561.14 and 87,497.86

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Solution

The fourth proportional to 155,480.98, 214,561.14 and 87,497.86 is: 120,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,480.98 : 214,561.14 = 87,497.86 : x
  2. Step 2: Convert to fraction form
    155,480.98/214,561.14 = 87,497.86/x
  3. Step 3: Cross multiply
    155,480.98x = 214,561.14 × 87,497.86
  4. Step 4: Simplify right side
    155,480.98x = 18,773,640,589.16
  5. Step 5: Solve for x
    x = 18,773,640,589.16/155,480.98
  6. Step 6: Final answer
    x = 120,745.58

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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.