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Finding the Fourth Proportional to 147,755.88, 221,653 and 67,774.56

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Solution

The fourth proportional to 147,755.88, 221,653 and 67,774.56 is: 101,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,755.88 : 221,653 = 67,774.56 : x
  2. Step 2: Convert to fraction form
    147,755.88/221,653 = 67,774.56/x
  3. Step 3: Cross multiply
    147,755.88x = 221,653 × 67,774.56
  4. Step 4: Simplify right side
    147,755.88x = 15,022,434,547.68
  5. Step 5: Solve for x
    x = 15,022,434,547.68/147,755.88
  6. Step 6: Final answer
    x = 101,670.64

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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.