Home / 122,117.25-168,579.53-81,857.32

Finding the Fourth Proportional to 122,117.25, 168,579.53 and 81,857.32

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Solution

The fourth proportional to 122,117.25, 168,579.53 and 81,857.32 is: 113,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,117.25 : 168,579.53 = 81,857.32 : x
  2. Step 2: Convert to fraction form
    122,117.25/168,579.53 = 81,857.32/x
  3. Step 3: Cross multiply
    122,117.25x = 168,579.53 × 81,857.32
  4. Step 4: Simplify right side
    122,117.25x = 13,799,468,008.89
  5. Step 5: Solve for x
    x = 13,799,468,008.89/122,117.25
  6. Step 6: Final answer
    x = 113,001.79

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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.