Home / 154,240.52-212,850.72-86,257.60

Finding the Fourth Proportional to 154,240.52, 212,850.72 and 86,257.60

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Solution

The fourth proportional to 154,240.52, 212,850.72 and 86,257.60 is: 119,034.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,240.52 : 212,850.72 = 86,257.60 : x
  2. Step 2: Convert to fraction form
    154,240.52/212,850.72 = 86,257.60/x
  3. Step 3: Cross multiply
    154,240.52x = 212,850.72 × 86,257.60
  4. Step 4: Simplify right side
    154,240.52x = 18,359,992,265.47
  5. Step 5: Solve for x
    x = 18,359,992,265.47/154,240.52
  6. Step 6: Final answer
    x = 119,034.82

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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.