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Finding the Fourth Proportional to 147,322.94, 221,080.77 and 80,809.89

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Solution

The fourth proportional to 147,322.94, 221,080.77 and 80,809.89 is: 121,267.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,322.94 : 221,080.77 = 80,809.89 : x
  2. Step 2: Convert to fraction form
    147,322.94/221,080.77 = 80,809.89/x
  3. Step 3: Cross multiply
    147,322.94x = 221,080.77 × 80,809.89
  4. Step 4: Simplify right side
    147,322.94x = 17,865,512,704.82
  5. Step 5: Solve for x
    x = 17,865,512,704.82/147,322.94
  6. Step 6: Final answer
    x = 121,267.69

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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.