Home / 112,989.42-169,274.43-80,902.28

Finding the Fourth Proportional to 112,989.42, 169,274.43 and 80,902.28

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Solution

The fourth proportional to 112,989.42, 169,274.43 and 80,902.28 is: 121,203.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,989.42 : 169,274.43 = 80,902.28 : x
  2. Step 2: Convert to fraction form
    112,989.42/169,274.43 = 80,902.28/x
  3. Step 3: Cross multiply
    112,989.42x = 169,274.43 × 80,902.28
  4. Step 4: Simplify right side
    112,989.42x = 13,694,686,486.33
  5. Step 5: Solve for x
    x = 13,694,686,486.33/112,989.42
  6. Step 6: Final answer
    x = 121,203.26

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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.