Home / 100,606.34-138,698.02-80,257.46

Finding the Fourth Proportional to 100,606.34, 138,698.02 and 80,257.46

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Solution

The fourth proportional to 100,606.34, 138,698.02 and 80,257.46 is: 110,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,606.34 : 138,698.02 = 80,257.46 : x
  2. Step 2: Convert to fraction form
    100,606.34/138,698.02 = 80,257.46/x
  3. Step 3: Cross multiply
    100,606.34x = 138,698.02 × 80,257.46
  4. Step 4: Simplify right side
    100,606.34x = 11,131,551,283.64
  5. Step 5: Solve for x
    x = 11,131,551,283.64/100,606.34
  6. Step 6: Final answer
    x = 110,644.64

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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.