Home / 245,205.90-338,394.11-137,775.60

Finding the Fourth Proportional to 245,205.90, 338,394.11 and 137,775.60

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Solution

The fourth proportional to 245,205.90, 338,394.11 and 137,775.60 is: 190,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,205.90 : 338,394.11 = 137,775.60 : x
  2. Step 2: Convert to fraction form
    245,205.90/338,394.11 = 137,775.60/x
  3. Step 3: Cross multiply
    245,205.90x = 338,394.11 × 137,775.60
  4. Step 4: Simplify right side
    245,205.90x = 46,622,450,852.84
  5. Step 5: Solve for x
    x = 46,622,450,852.84/245,205.90
  6. Step 6: Final answer
    x = 190,135.93

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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.