Home / 121,005.80-181,591.39-42,120.03

Finding the Fourth Proportional to 121,005.80, 181,591.39 and 42,120.03

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Solution

The fourth proportional to 121,005.80, 181,591.39 and 42,120.03 is: 63,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.80 : 181,591.39 = 42,120.03 : x
  2. Step 2: Convert to fraction form
    121,005.80/181,591.39 = 42,120.03/x
  3. Step 3: Cross multiply
    121,005.80x = 181,591.39 × 42,120.03
  4. Step 4: Simplify right side
    121,005.80x = 7,648,634,114.44
  5. Step 5: Solve for x
    x = 7,648,634,114.44/121,005.80
  6. Step 6: Final answer
    x = 63,208.82

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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.