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Finding the Fourth Proportional to 126,422.91, 174,448.76 and 69,830.91

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Solution

The fourth proportional to 126,422.91, 174,448.76 and 69,830.91 is: 96,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,422.91 : 174,448.76 = 69,830.91 : x
  2. Step 2: Convert to fraction form
    126,422.91/174,448.76 = 69,830.91/x
  3. Step 3: Cross multiply
    126,422.91x = 174,448.76 × 69,830.91
  4. Step 4: Simplify right side
    126,422.91x = 12,181,915,310.02
  5. Step 5: Solve for x
    x = 12,181,915,310.02/126,422.91
  6. Step 6: Final answer
    x = 96,358.45

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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.