Home / 154,235.05-212,842.89-86,251.24

Finding the Fourth Proportional to 154,235.05, 212,842.89 and 86,251.24

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Solution

The fourth proportional to 154,235.05, 212,842.89 and 86,251.24 is: 119,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,235.05 : 212,842.89 = 86,251.24 : x
  2. Step 2: Convert to fraction form
    154,235.05/212,842.89 = 86,251.24/x
  3. Step 3: Cross multiply
    154,235.05x = 212,842.89 × 86,251.24
  4. Step 4: Simplify right side
    154,235.05x = 18,357,963,187.68
  5. Step 5: Solve for x
    x = 18,357,963,187.68/154,235.05
  6. Step 6: Final answer
    x = 119,025.88

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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.