Home / 168,505,928.70-252,380,979.45-138,272,840.70

Finding the Fourth Proportional to 168,505,928.70, 252,380,979.45 and 138,272,840.70

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Solution

The fourth proportional to 168,505,928.70, 252,380,979.45 and 138,272,840.70 is: 207,099,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,505,928.70 : 252,380,979.45 = 138,272,840.70 : x
  2. Step 2: Convert to fraction form
    168,505,928.70/252,380,979.45 = 138,272,840.70/x
  3. Step 3: Cross multiply
    168,505,928.70x = 252,380,979.45 × 138,272,840.70
  4. Step 4: Simplify right side
    168,505,928.70x = 34,897,434,967,199,820
  5. Step 5: Solve for x
    x = 34,897,434,967,199,820/168,505,928.70
  6. Step 6: Final answer
    x = 207,099,152.16

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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.