Home / 121,569.48-167,565.06-81,268.54

Finding the Fourth Proportional to 121,569.48, 167,565.06 and 81,268.54

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Solution

The fourth proportional to 121,569.48, 167,565.06 and 81,268.54 is: 112,016.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,569.48 : 167,565.06 = 81,268.54 : x
  2. Step 2: Convert to fraction form
    121,569.48/167,565.06 = 81,268.54/x
  3. Step 3: Cross multiply
    121,569.48x = 167,565.06 × 81,268.54
  4. Step 4: Simplify right side
    121,569.48x = 13,617,767,362.30
  5. Step 5: Solve for x
    x = 13,617,767,362.30/121,569.48
  6. Step 6: Final answer
    x = 112,016.33

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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.