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Finding the Fourth Proportional to 154,283.49, 212,825.54 and 89,745.46

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Solution

The fourth proportional to 154,283.49, 212,825.54 and 89,745.46 is: 123,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,283.49 : 212,825.54 = 89,745.46 : x
  2. Step 2: Convert to fraction form
    154,283.49/212,825.54 = 89,745.46/x
  3. Step 3: Cross multiply
    154,283.49x = 212,825.54 × 89,745.46
  4. Step 4: Simplify right side
    154,283.49x = 19,100,125,987.05
  5. Step 5: Solve for x
    x = 19,100,125,987.05/154,283.49
  6. Step 6: Final answer
    x = 123,798.90

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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.