Home / 155,046.20-213,961-87,063.72

Finding the Fourth Proportional to 155,046.20, 213,961 and 87,063.72

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Solution

The fourth proportional to 155,046.20, 213,961 and 87,063.72 is: 120,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,046.20 : 213,961 = 87,063.72 : x
  2. Step 2: Convert to fraction form
    155,046.20/213,961 = 87,063.72/x
  3. Step 3: Cross multiply
    155,046.20x = 213,961 × 87,063.72
  4. Step 4: Simplify right side
    155,046.20x = 18,628,240,594.92
  5. Step 5: Solve for x
    x = 18,628,240,594.92/155,046.20
  6. Step 6: Final answer
    x = 120,146.39

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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.