Home / 213,929.30-295,129.72-128,999.18

Finding the Fourth Proportional to 213,929.30, 295,129.72 and 128,999.18

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Solution

The fourth proportional to 213,929.30, 295,129.72 and 128,999.18 is: 177,962.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,929.30 : 295,129.72 = 128,999.18 : x
  2. Step 2: Convert to fraction form
    213,929.30/295,129.72 = 128,999.18/x
  3. Step 3: Cross multiply
    213,929.30x = 295,129.72 × 128,999.18
  4. Step 4: Simplify right side
    213,929.30x = 38,071,491,873.63
  5. Step 5: Solve for x
    x = 38,071,491,873.63/213,929.30
  6. Step 6: Final answer
    x = 177,962.96

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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.