Home / 245,022.03-338,129.10-137,601.45

Finding the Fourth Proportional to 245,022.03, 338,129.10 and 137,601.45

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Solution

The fourth proportional to 245,022.03, 338,129.10 and 137,601.45 is: 189,889.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,022.03 : 338,129.10 = 137,601.45 : x
  2. Step 2: Convert to fraction form
    245,022.03/338,129.10 = 137,601.45/x
  3. Step 3: Cross multiply
    245,022.03x = 338,129.10 × 137,601.45
  4. Step 4: Simplify right side
    245,022.03x = 46,527,054,447.20
  5. Step 5: Solve for x
    x = 46,527,054,447.20/245,022.03
  6. Step 6: Final answer
    x = 189,889.27

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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.