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Finding the Fourth Proportional to 148,907.52, 205,486.74 and 85,251.24

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Solution

The fourth proportional to 148,907.52, 205,486.74 and 85,251.24 is: 117,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,907.52 : 205,486.74 = 85,251.24 : x
  2. Step 2: Convert to fraction form
    148,907.52/205,486.74 = 85,251.24/x
  3. Step 3: Cross multiply
    148,907.52x = 205,486.74 × 85,251.24
  4. Step 4: Simplify right side
    148,907.52x = 17,517,999,388.56
  5. Step 5: Solve for x
    x = 17,517,999,388.56/148,907.52
  6. Step 6: Final answer
    x = 117,643.48

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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.