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Finding the Fourth Proportional to 121,251.82, 181,878.04 and 42,366.03

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Solution

The fourth proportional to 121,251.82, 181,878.04 and 42,366.03 is: 63,549.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,251.82 : 181,878.04 = 42,366.03 : x
  2. Step 2: Convert to fraction form
    121,251.82/181,878.04 = 42,366.03/x
  3. Step 3: Cross multiply
    121,251.82x = 181,878.04 × 42,366.03
  4. Step 4: Simplify right side
    121,251.82x = 7,705,450,498.98
  5. Step 5: Solve for x
    x = 7,705,450,498.98/121,251.82
  6. Step 6: Final answer
    x = 63,549.15

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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.