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Finding the Fourth Proportional to 213,853.95, 295,107.93 and 121,976.87

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Solution

The fourth proportional to 213,853.95, 295,107.93 and 121,976.87 is: 168,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,853.95 : 295,107.93 = 121,976.87 : x
  2. Step 2: Convert to fraction form
    213,853.95/295,107.93 = 121,976.87/x
  3. Step 3: Cross multiply
    213,853.95x = 295,107.93 × 121,976.87
  4. Step 4: Simplify right side
    213,853.95x = 35,996,341,613.58
  5. Step 5: Solve for x
    x = 35,996,341,613.58/213,853.95
  6. Step 6: Final answer
    x = 168,322.08

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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.