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Finding the Fourth Proportional to 216,786.12, 299,155.86 and 118,668.66

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Solution

The fourth proportional to 216,786.12, 299,155.86 and 118,668.66 is: 163,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,786.12 : 299,155.86 = 118,668.66 : x
  2. Step 2: Convert to fraction form
    216,786.12/299,155.86 = 118,668.66/x
  3. Step 3: Cross multiply
    216,786.12x = 299,155.86 × 118,668.66
  4. Step 4: Simplify right side
    216,786.12x = 35,500,425,037.35
  5. Step 5: Solve for x
    x = 35,500,425,037.35/216,786.12
  6. Step 6: Final answer
    x = 163,757.83

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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.