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Finding the Fourth Proportional to 125,439.66, 173,106.83 and 68,078.97

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Solution

The fourth proportional to 125,439.66, 173,106.83 and 68,078.97 is: 93,949.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,439.66 : 173,106.83 = 68,078.97 : x
  2. Step 2: Convert to fraction form
    125,439.66/173,106.83 = 68,078.97/x
  3. Step 3: Cross multiply
    125,439.66x = 173,106.83 × 68,078.97
  4. Step 4: Simplify right side
    125,439.66x = 11,784,934,686.37
  5. Step 5: Solve for x
    x = 11,784,934,686.37/125,439.66
  6. Step 6: Final answer
    x = 93,949.03

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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.