Home / 154,398.56-213,069.69-86,415.26

Finding the Fourth Proportional to 154,398.56, 213,069.69 and 86,415.26

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Solution

The fourth proportional to 154,398.56, 213,069.69 and 86,415.26 is: 119,252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,398.56 : 213,069.69 = 86,415.26 : x
  2. Step 2: Convert to fraction form
    154,398.56/213,069.69 = 86,415.26/x
  3. Step 3: Cross multiply
    154,398.56x = 213,069.69 × 86,415.26
  4. Step 4: Simplify right side
    154,398.56x = 18,412,471,594.12
  5. Step 5: Solve for x
    x = 18,412,471,594.12/154,398.56
  6. Step 6: Final answer
    x = 119,252.88

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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.