Home / 138,026.82-190,475.18-76,772.60

Finding the Fourth Proportional to 138,026.82, 190,475.18 and 76,772.60

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Solution

The fourth proportional to 138,026.82, 190,475.18 and 76,772.60 is: 105,945.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,026.82 : 190,475.18 = 76,772.60 : x
  2. Step 2: Convert to fraction form
    138,026.82/190,475.18 = 76,772.60/x
  3. Step 3: Cross multiply
    138,026.82x = 190,475.18 × 76,772.60
  4. Step 4: Simplify right side
    138,026.82x = 14,623,273,467.83
  5. Step 5: Solve for x
    x = 14,623,273,467.83/138,026.82
  6. Step 6: Final answer
    x = 105,945.16

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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.