Home / 154,384.80-231,577.20-79,400.40

Finding the Fourth Proportional to 154,384.80, 231,577.20 and 79,400.40

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Solution

The fourth proportional to 154,384.80, 231,577.20 and 79,400.40 is: 119,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,384.80 : 231,577.20 = 79,400.40 : x
  2. Step 2: Convert to fraction form
    154,384.80/231,577.20 = 79,400.40/x
  3. Step 3: Cross multiply
    154,384.80x = 231,577.20 × 79,400.40
  4. Step 4: Simplify right side
    154,384.80x = 18,387,322,310.88
  5. Step 5: Solve for x
    x = 18,387,322,310.88/154,384.80
  6. Step 6: Final answer
    x = 119,100.60

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1.5x scale

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.