Home / 121,563.75-167,557.19-81,262.81

Finding the Fourth Proportional to 121,563.75, 167,557.19 and 81,262.81

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Solution

The fourth proportional to 121,563.75, 167,557.19 and 81,262.81 is: 112,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,563.75 : 167,557.19 = 81,262.81 : x
  2. Step 2: Convert to fraction form
    121,563.75/167,557.19 = 81,262.81/x
  3. Step 3: Cross multiply
    121,563.75x = 167,557.19 × 81,262.81
  4. Step 4: Simplify right side
    121,563.75x = 13,616,168,095.10
  5. Step 5: Solve for x
    x = 13,616,168,095.10/121,563.75
  6. Step 6: Final answer
    x = 112,008.46

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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.