Home / 121,538.36-167,669.54-115,910.25

Finding the Fourth Proportional to 121,538.36, 167,669.54 and 115,910.25

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Solution

The fourth proportional to 121,538.36, 167,669.54 and 115,910.25 is: 159,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,538.36 : 167,669.54 = 115,910.25 : x
  2. Step 2: Convert to fraction form
    121,538.36/167,669.54 = 115,910.25/x
  3. Step 3: Cross multiply
    121,538.36x = 167,669.54 × 115,910.25
  4. Step 4: Simplify right side
    121,538.36x = 19,434,617,719.23
  5. Step 5: Solve for x
    x = 19,434,617,719.23/121,538.36
  6. Step 6: Final answer
    x = 159,905.22

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1.5x scale

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.