Home / 138,213.33-190,734.00-77,783.97

Finding the Fourth Proportional to 138,213.33, 190,734.00 and 77,783.97

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Solution

The fourth proportional to 138,213.33, 190,734.00 and 77,783.97 is: 107,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,213.33 : 190,734.00 = 77,783.97 : x
  2. Step 2: Convert to fraction form
    138,213.33/190,734.00 = 77,783.97/x
  3. Step 3: Cross multiply
    138,213.33x = 190,734.00 × 77,783.97
  4. Step 4: Simplify right side
    138,213.33x = 14,836,047,345.06
  5. Step 5: Solve for x
    x = 14,836,047,345.06/138,213.33
  6. Step 6: Final answer
    x = 107,341.65

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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.