Home / 188,547.09-259,940.30-128,012.64

Finding the Fourth Proportional to 188,547.09, 259,940.30 and 128,012.64

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Solution

The fourth proportional to 188,547.09, 259,940.30 and 128,012.64 is: 176,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,547.09 : 259,940.30 = 128,012.64 : x
  2. Step 2: Convert to fraction form
    188,547.09/259,940.30 = 128,012.64/x
  3. Step 3: Cross multiply
    188,547.09x = 259,940.30 × 128,012.64
  4. Step 4: Simplify right side
    188,547.09x = 33,275,643,405.33
  5. Step 5: Solve for x
    x = 33,275,643,405.33/188,547.09
  6. Step 6: Final answer
    x = 176,484.52

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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.