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Finding the Fourth Proportional to 126,668.62, 174,790.47 and 70,078.78

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Solution

The fourth proportional to 126,668.62, 174,790.47 and 70,078.78 is: 96,701.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,668.62 : 174,790.47 = 70,078.78 : x
  2. Step 2: Convert to fraction form
    126,668.62/174,790.47 = 70,078.78/x
  3. Step 3: Cross multiply
    126,668.62x = 174,790.47 × 70,078.78
  4. Step 4: Simplify right side
    126,668.62x = 12,249,102,893.23
  5. Step 5: Solve for x
    x = 12,249,102,893.23/126,668.62
  6. Step 6: Final answer
    x = 96,701.95

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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.