Home / 172,417,999.20-258,626,998.80-90,505,226.40

Finding the Fourth Proportional to 172,417,999.20, 258,626,998.80 and 90,505,226.40

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Solution

The fourth proportional to 172,417,999.20, 258,626,998.80 and 90,505,226.40 is: 135,757,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,417,999.20 : 258,626,998.80 = 90,505,226.40 : x
  2. Step 2: Convert to fraction form
    172,417,999.20/258,626,998.80 = 90,505,226.40/x
  3. Step 3: Cross multiply
    172,417,999.20x = 258,626,998.80 × 90,505,226.40
  4. Step 4: Simplify right side
    172,417,999.20x = 23,407,095,079,546,532
  5. Step 5: Solve for x
    x = 23,407,095,079,546,532/172,417,999.20
  6. Step 6: Final answer
    x = 135,757,839.60

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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.