Home / 245,039.04-338,127.12-137,620.80

Finding the Fourth Proportional to 245,039.04, 338,127.12 and 137,620.80

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Solution

The fourth proportional to 245,039.04, 338,127.12 and 137,620.80 is: 189,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,039.04 : 338,127.12 = 137,620.80 : x
  2. Step 2: Convert to fraction form
    245,039.04/338,127.12 = 137,620.80/x
  3. Step 3: Cross multiply
    245,039.04x = 338,127.12 × 137,620.80
  4. Step 4: Simplify right side
    245,039.04x = 46,533,324,756.10
  5. Step 5: Solve for x
    x = 46,533,324,756.10/245,039.04
  6. Step 6: Final answer
    x = 189,901.68

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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.