Home / 147,738.78-221,454.90-68,788.08

Finding the Fourth Proportional to 147,738.78, 221,454.90 and 68,788.08

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Solution

The fourth proportional to 147,738.78, 221,454.90 and 68,788.08 is: 103,110.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,738.78 : 221,454.90 = 68,788.08 : x
  2. Step 2: Convert to fraction form
    147,738.78/221,454.90 = 68,788.08/x
  3. Step 3: Cross multiply
    147,738.78x = 221,454.90 × 68,788.08
  4. Step 4: Simplify right side
    147,738.78x = 15,233,457,377.59
  5. Step 5: Solve for x
    x = 15,233,457,377.59/147,738.78
  6. Step 6: Final answer
    x = 103,110.76

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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.