Home / 138,963.56-208,724.29-82,913.05

Finding the Fourth Proportional to 138,963.56, 208,724.29 and 82,913.05

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Solution

The fourth proportional to 138,963.56, 208,724.29 and 82,913.05 is: 124,536.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,963.56 : 208,724.29 = 82,913.05 : x
  2. Step 2: Convert to fraction form
    138,963.56/208,724.29 = 82,913.05/x
  3. Step 3: Cross multiply
    138,963.56x = 208,724.29 × 82,913.05
  4. Step 4: Simplify right side
    138,963.56x = 17,305,966,763.89
  5. Step 5: Solve for x
    x = 17,305,966,763.89/138,963.56
  6. Step 6: Final answer
    x = 124,536.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.