Home / 109,356.30-164,034.45-74,105.10

Finding the Fourth Proportional to 109,356.30, 164,034.45 and 74,105.10

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Solution

The fourth proportional to 109,356.30, 164,034.45 and 74,105.10 is: 111,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,356.30 : 164,034.45 = 74,105.10 : x
  2. Step 2: Convert to fraction form
    109,356.30/164,034.45 = 74,105.10/x
  3. Step 3: Cross multiply
    109,356.30x = 164,034.45 × 74,105.10
  4. Step 4: Simplify right side
    109,356.30x = 12,155,789,320.70
  5. Step 5: Solve for x
    x = 12,155,789,320.70/109,356.30
  6. Step 6: Final answer
    x = 111,157.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.