Home / 154,633.68-212,919.96-135,403.44

Finding the Fourth Proportional to 154,633.68, 212,919.96 and 135,403.44

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Solution

The fourth proportional to 154,633.68, 212,919.96 and 135,403.44 is: 186,441.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,633.68 : 212,919.96 = 135,403.44 : x
  2. Step 2: Convert to fraction form
    154,633.68/212,919.96 = 135,403.44/x
  3. Step 3: Cross multiply
    154,633.68x = 212,919.96 × 135,403.44
  4. Step 4: Simplify right side
    154,633.68x = 28,830,095,028.66
  5. Step 5: Solve for x
    x = 28,830,095,028.66/154,633.68
  6. Step 6: Final answer
    x = 186,441.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.