Home / 213,503.09-294,663.56-122,857.20

Finding the Fourth Proportional to 213,503.09, 294,663.56 and 122,857.20

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Solution

The fourth proportional to 213,503.09, 294,663.56 and 122,857.20 is: 169,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,503.09 : 294,663.56 = 122,857.20 : x
  2. Step 2: Convert to fraction form
    213,503.09/294,663.56 = 122,857.20/x
  3. Step 3: Cross multiply
    213,503.09x = 294,663.56 × 122,857.20
  4. Step 4: Simplify right side
    213,503.09x = 36,201,539,309.35
  5. Step 5: Solve for x
    x = 36,201,539,309.35/213,503.09
  6. Step 6: Final answer
    x = 169,559.79

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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.