Home / 154,858.33-213,684.03-86,872.70

Finding the Fourth Proportional to 154,858.33, 213,684.03 and 86,872.70

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Solution

The fourth proportional to 154,858.33, 213,684.03 and 86,872.70 is: 119,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,858.33 : 213,684.03 = 86,872.70 : x
  2. Step 2: Convert to fraction form
    154,858.33/213,684.03 = 86,872.70/x
  3. Step 3: Cross multiply
    154,858.33x = 213,684.03 × 86,872.70
  4. Step 4: Simplify right side
    154,858.33x = 18,563,307,965.22
  5. Step 5: Solve for x
    x = 18,563,307,965.22/154,858.33
  6. Step 6: Final answer
    x = 119,872.84

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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.