Home / 245,659.90-339,012.12-138,231.76

Finding the Fourth Proportional to 245,659.90, 339,012.12 and 138,231.76

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Solution

The fourth proportional to 245,659.90, 339,012.12 and 138,231.76 is: 190,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,659.90 : 339,012.12 = 138,231.76 : x
  2. Step 2: Convert to fraction form
    245,659.90/339,012.12 = 138,231.76/x
  3. Step 3: Cross multiply
    245,659.90x = 339,012.12 × 138,231.76
  4. Step 4: Simplify right side
    245,659.90x = 46,862,242,008.93
  5. Step 5: Solve for x
    x = 46,862,242,008.93/245,659.90
  6. Step 6: Final answer
    x = 190,760.65

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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.