Home / 154,420.73-213,104.21-86,436.01

Finding the Fourth Proportional to 154,420.73, 213,104.21 and 86,436.01

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Solution

The fourth proportional to 154,420.73, 213,104.21 and 86,436.01 is: 119,283.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,420.73 : 213,104.21 = 86,436.01 : x
  2. Step 2: Convert to fraction form
    154,420.73/213,104.21 = 86,436.01/x
  3. Step 3: Cross multiply
    154,420.73x = 213,104.21 × 86,436.01
  4. Step 4: Simplify right side
    154,420.73x = 18,419,877,626.60
  5. Step 5: Solve for x
    x = 18,419,877,626.60/154,420.73
  6. Step 6: Final answer
    x = 119,283.71

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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.