Home / 147,864.30-221,796.45-138,022.80

Finding the Fourth Proportional to 147,864.30, 221,796.45 and 138,022.80

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Solution

The fourth proportional to 147,864.30, 221,796.45 and 138,022.80 is: 207,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,864.30 : 221,796.45 = 138,022.80 : x
  2. Step 2: Convert to fraction form
    147,864.30/221,796.45 = 138,022.80/x
  3. Step 3: Cross multiply
    147,864.30x = 221,796.45 × 138,022.80
  4. Step 4: Simplify right side
    147,864.30x = 30,612,967,059.06
  5. Step 5: Solve for x
    x = 30,612,967,059.06/147,864.30
  6. Step 6: Final answer
    x = 207,034.20

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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.