Home / 109,256.37-150,816.11-85,390.74

Finding the Fourth Proportional to 109,256.37, 150,816.11 and 85,390.74

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Solution

The fourth proportional to 109,256.37, 150,816.11 and 85,390.74 is: 117,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,256.37 : 150,816.11 = 85,390.74 : x
  2. Step 2: Convert to fraction form
    109,256.37/150,816.11 = 85,390.74/x
  3. Step 3: Cross multiply
    109,256.37x = 150,816.11 × 85,390.74
  4. Step 4: Simplify right side
    109,256.37x = 12,878,299,236.82
  5. Step 5: Solve for x
    x = 12,878,299,236.82/109,256.37
  6. Step 6: Final answer
    x = 117,872.30

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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.