Home / 137,868.01-190,209.40-90,149.29

Finding the Fourth Proportional to 137,868.01, 190,209.40 and 90,149.29

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Solution

The fourth proportional to 137,868.01, 190,209.40 and 90,149.29 is: 124,374.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,868.01 : 190,209.40 = 90,149.29 : x
  2. Step 2: Convert to fraction form
    137,868.01/190,209.40 = 90,149.29/x
  3. Step 3: Cross multiply
    137,868.01x = 190,209.40 × 90,149.29
  4. Step 4: Simplify right side
    137,868.01x = 17,147,242,361.33
  5. Step 5: Solve for x
    x = 17,147,242,361.33/137,868.01
  6. Step 6: Final answer
    x = 124,374.34

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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.