Home / 213,904.80-295,095.96-128,974.68

Finding the Fourth Proportional to 213,904.80, 295,095.96 and 128,974.68

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Solution

The fourth proportional to 213,904.80, 295,095.96 and 128,974.68 is: 177,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,904.80 : 295,095.96 = 128,974.68 : x
  2. Step 2: Convert to fraction form
    213,904.80/295,095.96 = 128,974.68/x
  3. Step 3: Cross multiply
    213,904.80x = 295,095.96 × 128,974.68
  4. Step 4: Simplify right side
    213,904.80x = 38,059,907,010.29
  5. Step 5: Solve for x
    x = 38,059,907,010.29/213,904.80
  6. Step 6: Final answer
    x = 177,929.19

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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.