Home / 137,731.16-190,181.04-112,241.28

Finding the Fourth Proportional to 137,731.16, 190,181.04 and 112,241.28

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Solution

The fourth proportional to 137,731.16, 190,181.04 and 112,241.28 is: 154,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,731.16 : 190,181.04 = 112,241.28 : x
  2. Step 2: Convert to fraction form
    137,731.16/190,181.04 = 112,241.28/x
  3. Step 3: Cross multiply
    137,731.16x = 190,181.04 × 112,241.28
  4. Step 4: Simplify right side
    137,731.16x = 21,346,163,361.33
  5. Step 5: Solve for x
    x = 21,346,163,361.33/137,731.16
  6. Step 6: Final answer
    x = 154,984.27

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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.