Home / 107,945.70-161,918.55-100,947.30

Finding the Fourth Proportional to 107,945.70, 161,918.55 and 100,947.30

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Solution

The fourth proportional to 107,945.70, 161,918.55 and 100,947.30 is: 151,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,945.70 : 161,918.55 = 100,947.30 : x
  2. Step 2: Convert to fraction form
    107,945.70/161,918.55 = 100,947.30/x
  3. Step 3: Cross multiply
    107,945.70x = 161,918.55 × 100,947.30
  4. Step 4: Simplify right side
    107,945.70x = 16,345,240,442.42
  5. Step 5: Solve for x
    x = 16,345,240,442.42/107,945.70
  6. Step 6: Final answer
    x = 151,420.95

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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.