Home / 156,522,240.72-215,990,166.60-86,904,023.76

Finding the Fourth Proportional to 156,522,240.72, 215,990,166.60 and 86,904,023.76

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Solution

The fourth proportional to 156,522,240.72, 215,990,166.60 and 86,904,023.76 is: 119,921,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,522,240.72 : 215,990,166.60 = 86,904,023.76 : x
  2. Step 2: Convert to fraction form
    156,522,240.72/215,990,166.60 = 86,904,023.76/x
  3. Step 3: Cross multiply
    156,522,240.72x = 215,990,166.60 × 86,904,023.76
  4. Step 4: Simplify right side
    156,522,240.72x = 18,770,414,570,132,760
  5. Step 5: Solve for x
    x = 18,770,414,570,132,760/156,522,240.72
  6. Step 6: Final answer
    x = 119,921,708.79

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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.