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Finding the Fourth Proportional to 197,106.79, 295,680.81 and 90,472.55

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Solution

The fourth proportional to 197,106.79, 295,680.81 and 90,472.55 is: 135,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,106.79 : 295,680.81 = 90,472.55 : x
  2. Step 2: Convert to fraction form
    197,106.79/295,680.81 = 90,472.55/x
  3. Step 3: Cross multiply
    197,106.79x = 295,680.81 × 90,472.55
  4. Step 4: Simplify right side
    197,106.79x = 26,750,994,964.27
  5. Step 5: Solve for x
    x = 26,750,994,964.27/197,106.79
  6. Step 6: Final answer
    x = 135,718.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.