Home / 154,356.03-213,004.08-86,381.64

Finding the Fourth Proportional to 154,356.03, 213,004.08 and 86,381.64

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Solution

The fourth proportional to 154,356.03, 213,004.08 and 86,381.64 is: 119,202.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,356.03 : 213,004.08 = 86,381.64 : x
  2. Step 2: Convert to fraction form
    154,356.03/213,004.08 = 86,381.64/x
  3. Step 3: Cross multiply
    154,356.03x = 213,004.08 × 86,381.64
  4. Step 4: Simplify right side
    154,356.03x = 18,399,641,757.09
  5. Step 5: Solve for x
    x = 18,399,641,757.09/154,356.03
  6. Step 6: Final answer
    x = 119,202.61

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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.