Home / 137,189.42-206,812.34-128,045

Finding the Fourth Proportional to 137,189.42, 206,812.34 and 128,045

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Solution

The fourth proportional to 137,189.42, 206,812.34 and 128,045 is: 193,027.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,189.42 : 206,812.34 = 128,045 : x
  2. Step 2: Convert to fraction form
    137,189.42/206,812.34 = 128,045/x
  3. Step 3: Cross multiply
    137,189.42x = 206,812.34 × 128,045
  4. Step 4: Simplify right side
    137,189.42x = 26,481,285,435.08
  5. Step 5: Solve for x
    x = 26,481,285,435.08/137,189.42
  6. Step 6: Final answer
    x = 193,027.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.