Home / 137,961.03-190,455.11-90,287.19

Finding the Fourth Proportional to 137,961.03, 190,455.11 and 90,287.19

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Solution

The fourth proportional to 137,961.03, 190,455.11 and 90,287.19 is: 124,641.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,961.03 : 190,455.11 = 90,287.19 : x
  2. Step 2: Convert to fraction form
    137,961.03/190,455.11 = 90,287.19/x
  3. Step 3: Cross multiply
    137,961.03x = 190,455.11 × 90,287.19
  4. Step 4: Simplify right side
    137,961.03x = 17,195,656,703.04
  5. Step 5: Solve for x
    x = 17,195,656,703.04/137,961.03
  6. Step 6: Final answer
    x = 124,641.41

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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.