Home / 171,090,251.20-256,635,376.80-80,390,987.20

Finding the Fourth Proportional to 171,090,251.20, 256,635,376.80 and 80,390,987.20

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Solution

The fourth proportional to 171,090,251.20, 256,635,376.80 and 80,390,987.20 is: 120,586,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,090,251.20 : 256,635,376.80 = 80,390,987.20 : x
  2. Step 2: Convert to fraction form
    171,090,251.20/256,635,376.80 = 80,390,987.20/x
  3. Step 3: Cross multiply
    171,090,251.20x = 256,635,376.80 × 80,390,987.20
  4. Step 4: Simplify right side
    171,090,251.20x = 20,631,171,291,395,980
  5. Step 5: Solve for x
    x = 20,631,171,291,395,980/171,090,251.20
  6. Step 6: Final answer
    x = 120,586,480.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.