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Finding the Fourth Proportional to 109,407.74, 150,907.74 and 66,987.26

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Solution

The fourth proportional to 109,407.74, 150,907.74 and 66,987.26 is: 92,396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,407.74 : 150,907.74 = 66,987.26 : x
  2. Step 2: Convert to fraction form
    109,407.74/150,907.74 = 66,987.26/x
  3. Step 3: Cross multiply
    109,407.74x = 150,907.74 × 66,987.26
  4. Step 4: Simplify right side
    109,407.74x = 10,108,896,015.39
  5. Step 5: Solve for x
    x = 10,108,896,015.39/109,407.74
  6. Step 6: Final answer
    x = 92,396.53

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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.