Home / 219,135.78-302,407.02-123,648.12

Finding the Fourth Proportional to 219,135.78, 302,407.02 and 123,648.12

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Solution

The fourth proportional to 219,135.78, 302,407.02 and 123,648.12 is: 170,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,135.78 : 302,407.02 = 123,648.12 : x
  2. Step 2: Convert to fraction form
    219,135.78/302,407.02 = 123,648.12/x
  3. Step 3: Cross multiply
    219,135.78x = 302,407.02 × 123,648.12
  4. Step 4: Simplify right side
    219,135.78x = 37,392,059,497.80
  5. Step 5: Solve for x
    x = 37,392,059,497.80/219,135.78
  6. Step 6: Final answer
    x = 170,634.20

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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.