Home / 87,372,004.90-131,058,007.35-85,671,393.70

Finding the Fourth Proportional to 87,372,004.90, 131,058,007.35 and 85,671,393.70

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Solution

The fourth proportional to 87,372,004.90, 131,058,007.35 and 85,671,393.70 is: 128,507,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,372,004.90 : 131,058,007.35 = 85,671,393.70 : x
  2. Step 2: Convert to fraction form
    87,372,004.90/131,058,007.35 = 85,671,393.70/x
  3. Step 3: Cross multiply
    87,372,004.90x = 131,058,007.35 × 85,671,393.70
  4. Step 4: Simplify right side
    87,372,004.90x = 11,227,922,145,219,344
  5. Step 5: Solve for x
    x = 11,227,922,145,219,344/87,372,004.90
  6. Step 6: Final answer
    x = 128,507,090.55

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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.