Home / 172,417,999.70-258,626,999.55-90,505,226.90

Finding the Fourth Proportional to 172,417,999.70, 258,626,999.55 and 90,505,226.90

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Solution

The fourth proportional to 172,417,999.70, 258,626,999.55 and 90,505,226.90 is: 135,757,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,417,999.70 : 258,626,999.55 = 90,505,226.90 : x
  2. Step 2: Convert to fraction form
    172,417,999.70/258,626,999.55 = 90,505,226.90/x
  3. Step 3: Cross multiply
    172,417,999.70x = 258,626,999.55 × 90,505,226.90
  4. Step 4: Simplify right side
    172,417,999.70x = 23,407,095,276,738,952
  5. Step 5: Solve for x
    x = 23,407,095,276,738,952/172,417,999.70
  6. Step 6: Final answer
    x = 135,757,840.35

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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.