Home / 121,087.31-181,631.97-42,201.41

Finding the Fourth Proportional to 121,087.31, 181,631.97 and 42,201.41

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Solution

The fourth proportional to 121,087.31, 181,631.97 and 42,201.41 is: 63,302.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,087.31 : 181,631.97 = 42,201.41 : x
  2. Step 2: Convert to fraction form
    121,087.31/181,631.97 = 42,201.41/x
  3. Step 3: Cross multiply
    121,087.31x = 181,631.97 × 42,201.41
  4. Step 4: Simplify right side
    121,087.31x = 7,665,124,326.92
  5. Step 5: Solve for x
    x = 7,665,124,326.92/121,087.31
  6. Step 6: Final answer
    x = 63,302.46

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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.