Home / 121,140.83-167,129.51-120,954.00

Finding the Fourth Proportional to 121,140.83, 167,129.51 and 120,954.00

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Solution

The fourth proportional to 121,140.83, 167,129.51 and 120,954.00 is: 166,871.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140.83 : 167,129.51 = 120,954.00 : x
  2. Step 2: Convert to fraction form
    121,140.83/167,129.51 = 120,954.00/x
  3. Step 3: Cross multiply
    121,140.83x = 167,129.51 × 120,954.00
  4. Step 4: Simplify right side
    121,140.83x = 20,214,981,834.40
  5. Step 5: Solve for x
    x = 20,214,981,834.40/121,140.83
  6. Step 6: Final answer
    x = 166,871.75

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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.