Home / 156,035,321.36-215,326,104.55-86,419,207.56

Finding the Fourth Proportional to 156,035,321.36, 215,326,104.55 and 86,419,207.56

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Solution

The fourth proportional to 156,035,321.36, 215,326,104.55 and 86,419,207.56 is: 119,257,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,035,321.36 : 215,326,104.55 = 86,419,207.56 : x
  2. Step 2: Convert to fraction form
    156,035,321.36/215,326,104.55 = 86,419,207.56/x
  3. Step 3: Cross multiply
    156,035,321.36x = 215,326,104.55 × 86,419,207.56
  4. Step 4: Simplify right side
    156,035,321.36x = 18,608,311,322,192,712
  5. Step 5: Solve for x
    x = 18,608,311,322,192,712/156,035,321.36
  6. Step 6: Final answer
    x = 119,257,044.88

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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.