Home / 155,251.79-214,270.16-87,274.36

Finding the Fourth Proportional to 155,251.79, 214,270.16 and 87,274.36

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Solution

The fourth proportional to 155,251.79, 214,270.16 and 87,274.36 is: 120,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,251.79 : 214,270.16 = 87,274.36 : x
  2. Step 2: Convert to fraction form
    155,251.79/214,270.16 = 87,274.36/x
  3. Step 3: Cross multiply
    155,251.79x = 214,270.16 × 87,274.36
  4. Step 4: Simplify right side
    155,251.79x = 18,700,290,644.73
  5. Step 5: Solve for x
    x = 18,700,290,644.73/155,251.79
  6. Step 6: Final answer
    x = 120,451.37

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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.