Home / 156,407,198.72-215,836,281.60-86,795,617.28

Finding the Fourth Proportional to 156,407,198.72, 215,836,281.60 and 86,795,617.28

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Solution

The fourth proportional to 156,407,198.72, 215,836,281.60 and 86,795,617.28 is: 119,774,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,407,198.72 : 215,836,281.60 = 86,795,617.28 : x
  2. Step 2: Convert to fraction form
    156,407,198.72/215,836,281.60 = 86,795,617.28/x
  3. Step 3: Cross multiply
    156,407,198.72x = 215,836,281.60 × 86,795,617.28
  4. Step 4: Simplify right side
    156,407,198.72x = 18,733,643,292,891,904
  5. Step 5: Solve for x
    x = 18,733,643,292,891,904/156,407,198.72
  6. Step 6: Final answer
    x = 119,774,815.01

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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.