Home / 121,274.22-181,994.55-42,388.53

Finding the Fourth Proportional to 121,274.22, 181,994.55 and 42,388.53

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Solution

The fourth proportional to 121,274.22, 181,994.55 and 42,388.53 is: 63,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,274.22 : 181,994.55 = 42,388.53 : x
  2. Step 2: Convert to fraction form
    121,274.22/181,994.55 = 42,388.53/x
  3. Step 3: Cross multiply
    121,274.22x = 181,994.55 × 42,388.53
  4. Step 4: Simplify right side
    121,274.22x = 7,714,481,442.51
  5. Step 5: Solve for x
    x = 7,714,481,442.51/121,274.22
  6. Step 6: Final answer
    x = 63,611.88

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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.