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Finding the Fourth Proportional to 143,277.80, 197,714.32 and 79,611.80

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Solution

The fourth proportional to 143,277.80, 197,714.32 and 79,611.80 is: 109,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,277.80 : 197,714.32 = 79,611.80 : x
  2. Step 2: Convert to fraction form
    143,277.80/197,714.32 = 79,611.80/x
  3. Step 3: Cross multiply
    143,277.80x = 197,714.32 × 79,611.80
  4. Step 4: Simplify right side
    143,277.80x = 15,740,391,713.37
  5. Step 5: Solve for x
    x = 15,740,391,713.37/143,277.80
  6. Step 6: Final answer
    x = 109,859.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.