Home / 117,001.26-161,481.06-86,985.90

Finding the Fourth Proportional to 117,001.26, 161,481.06 and 86,985.90

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Solution

The fourth proportional to 117,001.26, 161,481.06 and 86,985.90 is: 120,054.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,001.26 : 161,481.06 = 86,985.90 : x
  2. Step 2: Convert to fraction form
    117,001.26/161,481.06 = 86,985.90/x
  3. Step 3: Cross multiply
    117,001.26x = 161,481.06 × 86,985.90
  4. Step 4: Simplify right side
    117,001.26x = 14,046,575,337.05
  5. Step 5: Solve for x
    x = 14,046,575,337.05/117,001.26
  6. Step 6: Final answer
    x = 120,054.91

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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.