Home / 155,288.88-214,306.24-87,327.20

Finding the Fourth Proportional to 155,288.88, 214,306.24 and 87,327.20

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Solution

The fourth proportional to 155,288.88, 214,306.24 and 87,327.20 is: 120,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,288.88 : 214,306.24 = 87,327.20 : x
  2. Step 2: Convert to fraction form
    155,288.88/214,306.24 = 87,327.20/x
  3. Step 3: Cross multiply
    155,288.88x = 214,306.24 × 87,327.20
  4. Step 4: Simplify right side
    155,288.88x = 18,714,763,881.73
  5. Step 5: Solve for x
    x = 18,714,763,881.73/155,288.88
  6. Step 6: Final answer
    x = 120,515.80

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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.