Home / 138,206.72-207,018.48-136,632.08

Finding the Fourth Proportional to 138,206.72, 207,018.48 and 136,632.08

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Solution

The fourth proportional to 138,206.72, 207,018.48 and 136,632.08 is: 204,659.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,206.72 : 207,018.48 = 136,632.08 : x
  2. Step 2: Convert to fraction form
    138,206.72/207,018.48 = 136,632.08/x
  3. Step 3: Cross multiply
    138,206.72x = 207,018.48 × 136,632.08
  4. Step 4: Simplify right side
    138,206.72x = 28,285,365,520.84
  5. Step 5: Solve for x
    x = 28,285,365,520.84/138,206.72
  6. Step 6: Final answer
    x = 204,659.84

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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.