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Finding the Fourth Proportional to 151,907.75, 209,650.50 and 91,508.88

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Solution

The fourth proportional to 151,907.75, 209,650.50 and 91,508.88 is: 126,292.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,907.75 : 209,650.50 = 91,508.88 : x
  2. Step 2: Convert to fraction form
    151,907.75/209,650.50 = 91,508.88/x
  3. Step 3: Cross multiply
    151,907.75x = 209,650.50 × 91,508.88
  4. Step 4: Simplify right side
    151,907.75x = 19,184,882,446.44
  5. Step 5: Solve for x
    x = 19,184,882,446.44/151,907.75
  6. Step 6: Final answer
    x = 126,292.98

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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.