Home / 154,357.03-213,005.46-86,382.64

Finding the Fourth Proportional to 154,357.03, 213,005.46 and 86,382.64

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Solution

The fourth proportional to 154,357.03, 213,005.46 and 86,382.64 is: 119,203.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,357.03 : 213,005.46 = 86,382.64 : x
  2. Step 2: Convert to fraction form
    154,357.03/213,005.46 = 86,382.64/x
  3. Step 3: Cross multiply
    154,357.03x = 213,005.46 × 86,382.64
  4. Step 4: Simplify right side
    154,357.03x = 18,399,973,969.21
  5. Step 5: Solve for x
    x = 18,399,973,969.21/154,357.03
  6. Step 6: Final answer
    x = 119,203.99

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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.