Home / 156,372,546.35-215,794,140.65-86,757,761.16

Finding the Fourth Proportional to 156,372,546.35, 215,794,140.65 and 86,757,761.16

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Solution

The fourth proportional to 156,372,546.35, 215,794,140.65 and 86,757,761.16 is: 119,725,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,372,546.35 : 215,794,140.65 = 86,757,761.16 : x
  2. Step 2: Convert to fraction form
    156,372,546.35/215,794,140.65 = 86,757,761.16/x
  3. Step 3: Cross multiply
    156,372,546.35x = 215,794,140.65 × 86,757,761.16
  4. Step 4: Simplify right side
    156,372,546.35x = 18,721,816,513,806,360
  5. Step 5: Solve for x
    x = 18,721,816,513,806,360/156,372,546.35
  6. Step 6: Final answer
    x = 119,725,725.21

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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.