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Finding the Fourth Proportional to 155,589.50, 214,700.75 and 87,584.74

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Solution

The fourth proportional to 155,589.50, 214,700.75 and 87,584.74 is: 120,859.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,589.50 : 214,700.75 = 87,584.74 : x
  2. Step 2: Convert to fraction form
    155,589.50/214,700.75 = 87,584.74/x
  3. Step 3: Cross multiply
    155,589.50x = 214,700.75 × 87,584.74
  4. Step 4: Simplify right side
    155,589.50x = 18,804,509,366.56
  5. Step 5: Solve for x
    x = 18,804,509,366.56/155,589.50
  6. Step 6: Final answer
    x = 120,859.76

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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.