Home / 138,121.98-190,445.30-94,535.56

Finding the Fourth Proportional to 138,121.98, 190,445.30 and 94,535.56

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Solution

The fourth proportional to 138,121.98, 190,445.30 and 94,535.56 is: 130,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,121.98 : 190,445.30 = 94,535.56 : x
  2. Step 2: Convert to fraction form
    138,121.98/190,445.30 = 94,535.56/x
  3. Step 3: Cross multiply
    138,121.98x = 190,445.30 × 94,535.56
  4. Step 4: Simplify right side
    138,121.98x = 18,003,853,084.87
  5. Step 5: Solve for x
    x = 18,003,853,084.87/138,121.98
  6. Step 6: Final answer
    x = 130,347.49

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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.