Home / 154,943.76-213,813.60-86,954.40

Finding the Fourth Proportional to 154,943.76, 213,813.60 and 86,954.40

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Solution

The fourth proportional to 154,943.76, 213,813.60 and 86,954.40 is: 119,992.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,943.76 : 213,813.60 = 86,954.40 : x
  2. Step 2: Convert to fraction form
    154,943.76/213,813.60 = 86,954.40/x
  3. Step 3: Cross multiply
    154,943.76x = 213,813.60 × 86,954.40
  4. Step 4: Simplify right side
    154,943.76x = 18,592,033,299.84
  5. Step 5: Solve for x
    x = 18,592,033,299.84/154,943.76
  6. Step 6: Final answer
    x = 119,992.14

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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.