Home / 245,581.03-338,921.50-138,144.65

Finding the Fourth Proportional to 245,581.03, 338,921.50 and 138,144.65

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Solution

The fourth proportional to 245,581.03, 338,921.50 and 138,144.65 is: 190,650.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,581.03 : 338,921.50 = 138,144.65 : x
  2. Step 2: Convert to fraction form
    245,581.03/338,921.50 = 138,144.65/x
  3. Step 3: Cross multiply
    245,581.03x = 338,921.50 × 138,144.65
  4. Step 4: Simplify right side
    245,581.03x = 46,820,191,994.98
  5. Step 5: Solve for x
    x = 46,820,191,994.98/245,581.03
  6. Step 6: Final answer
    x = 190,650.69

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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.