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Finding the Fourth Proportional to 151,907.66, 209,336.56 and 109,385.90

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Solution

The fourth proportional to 151,907.66, 209,336.56 and 109,385.90 is: 150,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,907.66 : 209,336.56 = 109,385.90 : x
  2. Step 2: Convert to fraction form
    151,907.66/209,336.56 = 109,385.90/x
  3. Step 3: Cross multiply
    151,907.66x = 209,336.56 × 109,385.90
  4. Step 4: Simplify right side
    151,907.66x = 22,898,466,698.36
  5. Step 5: Solve for x
    x = 22,898,466,698.36/151,907.66
  6. Step 6: Final answer
    x = 150,739.39

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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.