Home / 147,959.21-221,936.76-138,503.17

Finding the Fourth Proportional to 147,959.21, 221,936.76 and 138,503.17

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Solution

The fourth proportional to 147,959.21, 221,936.76 and 138,503.17 is: 207,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,959.21 : 221,936.76 = 138,503.17 : x
  2. Step 2: Convert to fraction form
    147,959.21/221,936.76 = 138,503.17/x
  3. Step 3: Cross multiply
    147,959.21x = 221,936.76 × 138,503.17
  4. Step 4: Simplify right side
    147,959.21x = 30,738,943,828.56
  5. Step 5: Solve for x
    x = 30,738,943,828.56/147,959.21
  6. Step 6: Final answer
    x = 207,752.83

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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.