Home / 135,340.08-203,009-105,782.76

Finding the Fourth Proportional to 135,340.08, 203,009 and 105,782.76

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Solution

The fourth proportional to 135,340.08, 203,009 and 105,782.76 is: 158,673.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,340.08 : 203,009 = 105,782.76 : x
  2. Step 2: Convert to fraction form
    135,340.08/203,009 = 105,782.76/x
  3. Step 3: Cross multiply
    135,340.08x = 203,009 × 105,782.76
  4. Step 4: Simplify right side
    135,340.08x = 21,474,852,324.84
  5. Step 5: Solve for x
    x = 21,474,852,324.84/135,340.08
  6. Step 6: Final answer
    x = 158,673.26

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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.