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Finding the Fourth Proportional to 217,166.64, 299,698.56 and 121,674.12

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Solution

The fourth proportional to 217,166.64, 299,698.56 and 121,674.12 is: 167,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,166.64 : 299,698.56 = 121,674.12 : x
  2. Step 2: Convert to fraction form
    217,166.64/299,698.56 = 121,674.12/x
  3. Step 3: Cross multiply
    217,166.64x = 299,698.56 × 121,674.12
  4. Step 4: Simplify right side
    217,166.64x = 36,465,558,553.27
  5. Step 5: Solve for x
    x = 36,465,558,553.27/217,166.64
  6. Step 6: Final answer
    x = 167,915.10

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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.