Home / 138,664.80-207,449.96-105,027.72

Finding the Fourth Proportional to 138,664.80, 207,449.96 and 105,027.72

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Solution

The fourth proportional to 138,664.80, 207,449.96 and 105,027.72 is: 157,127.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,664.80 : 207,449.96 = 105,027.72 : x
  2. Step 2: Convert to fraction form
    138,664.80/207,449.96 = 105,027.72/x
  3. Step 3: Cross multiply
    138,664.80x = 207,449.96 × 105,027.72
  4. Step 4: Simplify right side
    138,664.80x = 21,787,996,312.89
  5. Step 5: Solve for x
    x = 21,787,996,312.89/138,664.80
  6. Step 6: Final answer
    x = 157,127.09

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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.