Home / 138,047.58-190,505.97-77,618.74

Finding the Fourth Proportional to 138,047.58, 190,505.97 and 77,618.74

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Solution

The fourth proportional to 138,047.58, 190,505.97 and 77,618.74 is: 107,114.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,047.58 : 190,505.97 = 77,618.74 : x
  2. Step 2: Convert to fraction form
    138,047.58/190,505.97 = 77,618.74/x
  3. Step 3: Cross multiply
    138,047.58x = 190,505.97 × 77,618.74
  4. Step 4: Simplify right side
    138,047.58x = 14,786,833,353.88
  5. Step 5: Solve for x
    x = 14,786,833,353.88/138,047.58
  6. Step 6: Final answer
    x = 107,114.04

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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.