Home / 245,072.15-338,200.91-137,642.19

Finding the Fourth Proportional to 245,072.15, 338,200.91 and 137,642.19

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Solution

The fourth proportional to 245,072.15, 338,200.91 and 137,642.19 is: 189,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,072.15 : 338,200.91 = 137,642.19 : x
  2. Step 2: Convert to fraction form
    245,072.15/338,200.91 = 137,642.19/x
  3. Step 3: Cross multiply
    245,072.15x = 338,200.91 × 137,642.19
  4. Step 4: Simplify right side
    245,072.15x = 46,550,713,912.39
  5. Step 5: Solve for x
    x = 46,550,713,912.39/245,072.15
  6. Step 6: Final answer
    x = 189,946.98

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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.