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Finding the Fourth Proportional to 109,417.37, 150,921.02 and 66,996.86

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Solution

The fourth proportional to 109,417.37, 150,921.02 and 66,996.86 is: 92,409.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,417.37 : 150,921.02 = 66,996.86 : x
  2. Step 2: Convert to fraction form
    109,417.37/150,921.02 = 66,996.86/x
  3. Step 3: Cross multiply
    109,417.37x = 150,921.02 × 66,996.86
  4. Step 4: Simplify right side
    109,417.37x = 10,111,233,860.88
  5. Step 5: Solve for x
    x = 10,111,233,860.88/109,417.37
  6. Step 6: Final answer
    x = 92,409.77

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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.