Home / 217,915.11-300,730.59-121,120.92

Finding the Fourth Proportional to 217,915.11, 300,730.59 and 121,120.92

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Solution

The fourth proportional to 217,915.11, 300,730.59 and 121,120.92 is: 167,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,915.11 : 300,730.59 = 121,120.92 : x
  2. Step 2: Convert to fraction form
    217,915.11/300,730.59 = 121,120.92/x
  3. Step 3: Cross multiply
    217,915.11x = 300,730.59 × 121,120.92
  4. Step 4: Simplify right side
    217,915.11x = 36,424,765,732.94
  5. Step 5: Solve for x
    x = 36,424,765,732.94/217,915.11
  6. Step 6: Final answer
    x = 167,151.17

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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.