Home / 138,286.44-190,852.20-90,551.52

Finding the Fourth Proportional to 138,286.44, 190,852.20 and 90,551.52

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Solution

The fourth proportional to 138,286.44, 190,852.20 and 90,551.52 is: 124,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,286.44 : 190,852.20 = 90,551.52 : x
  2. Step 2: Convert to fraction form
    138,286.44/190,852.20 = 90,551.52/x
  3. Step 3: Cross multiply
    138,286.44x = 190,852.20 × 90,551.52
  4. Step 4: Simplify right side
    138,286.44x = 17,281,956,805.34
  5. Step 5: Solve for x
    x = 17,281,956,805.34/138,286.44
  6. Step 6: Final answer
    x = 124,972.17

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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.