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Finding the Fourth Proportional to 155,589.76, 214,696.11 and 87,604.98

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Solution

The fourth proportional to 155,589.76, 214,696.11 and 87,604.98 is: 120,884.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,589.76 : 214,696.11 = 87,604.98 : x
  2. Step 2: Convert to fraction form
    155,589.76/214,696.11 = 87,604.98/x
  3. Step 3: Cross multiply
    155,589.76x = 214,696.11 × 87,604.98
  4. Step 4: Simplify right side
    155,589.76x = 18,808,448,422.63
  5. Step 5: Solve for x
    x = 18,808,448,422.63/155,589.76
  6. Step 6: Final answer
    x = 120,884.87

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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.