Home / 109,940.78-151,676.88-64,620.74

Finding the Fourth Proportional to 109,940.78, 151,676.88 and 64,620.74

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Solution

The fourth proportional to 109,940.78, 151,676.88 and 64,620.74 is: 89,152.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.78 : 151,676.88 = 64,620.74 : x
  2. Step 2: Convert to fraction form
    109,940.78/151,676.88 = 64,620.74/x
  3. Step 3: Cross multiply
    109,940.78x = 151,676.88 × 64,620.74
  4. Step 4: Simplify right side
    109,940.78x = 9,801,472,226.49
  5. Step 5: Solve for x
    x = 9,801,472,226.49/109,940.78
  6. Step 6: Final answer
    x = 89,152.29

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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.