Home / 121,290.89-181,695.67-57,161.23

Finding the Fourth Proportional to 121,290.89, 181,695.67 and 57,161.23

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Solution

The fourth proportional to 121,290.89, 181,695.67 and 57,161.23 is: 85,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,290.89 : 181,695.67 = 57,161.23 : x
  2. Step 2: Convert to fraction form
    121,290.89/181,695.67 = 57,161.23/x
  3. Step 3: Cross multiply
    121,290.89x = 181,695.67 × 57,161.23
  4. Step 4: Simplify right side
    121,290.89x = 10,385,947,385.73
  5. Step 5: Solve for x
    x = 10,385,947,385.73/121,290.89
  6. Step 6: Final answer
    x = 85,628.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.