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Finding the Fourth Proportional to 154,201.92, 212,774.48 and 89,685.44

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Solution

The fourth proportional to 154,201.92, 212,774.48 and 89,685.44 is: 123,751.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,201.92 : 212,774.48 = 89,685.44 : x
  2. Step 2: Convert to fraction form
    154,201.92/212,774.48 = 89,685.44/x
  3. Step 3: Cross multiply
    154,201.92x = 212,774.48 × 89,685.44
  4. Step 4: Simplify right side
    154,201.92x = 19,082,772,859.57
  5. Step 5: Solve for x
    x = 19,082,772,859.57/154,201.92
  6. Step 6: Final answer
    x = 123,751.85

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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.