Home / 117,259.79-161,805.56-66,272.51

Finding the Fourth Proportional to 117,259.79, 161,805.56 and 66,272.51

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Solution

The fourth proportional to 117,259.79, 161,805.56 and 66,272.51 is: 91,448.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,259.79 : 161,805.56 = 66,272.51 : x
  2. Step 2: Convert to fraction form
    117,259.79/161,805.56 = 66,272.51/x
  3. Step 3: Cross multiply
    117,259.79x = 161,805.56 × 66,272.51
  4. Step 4: Simplify right side
    117,259.79x = 10,723,259,452.77
  5. Step 5: Solve for x
    x = 10,723,259,452.77/117,259.79
  6. Step 6: Final answer
    x = 91,448.74

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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.