Home / 99,415.82-137,157.09-59,131.28

Finding the Fourth Proportional to 99,415.82, 137,157.09 and 59,131.28

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Solution

The fourth proportional to 99,415.82, 137,157.09 and 59,131.28 is: 81,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,415.82 : 137,157.09 = 59,131.28 : x
  2. Step 2: Convert to fraction form
    99,415.82/137,157.09 = 59,131.28/x
  3. Step 3: Cross multiply
    99,415.82x = 137,157.09 × 59,131.28
  4. Step 4: Simplify right side
    99,415.82x = 8,110,274,292.78
  5. Step 5: Solve for x
    x = 8,110,274,292.78/99,415.82
  6. Step 6: Final answer
    x = 81,579.31

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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.