Home / 210,774.25-290,873.43-120,138.69

Finding the Fourth Proportional to 210,774.25, 290,873.43 and 120,138.69

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Solution

The fourth proportional to 210,774.25, 290,873.43 and 120,138.69 is: 165,794.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,774.25 : 290,873.43 = 120,138.69 : x
  2. Step 2: Convert to fraction form
    210,774.25/290,873.43 = 120,138.69/x
  3. Step 3: Cross multiply
    210,774.25x = 290,873.43 × 120,138.69
  4. Step 4: Simplify right side
    210,774.25x = 34,945,153,926.78
  5. Step 5: Solve for x
    x = 34,945,153,926.78/210,774.25
  6. Step 6: Final answer
    x = 165,794.23

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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.