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Finding the Fourth Proportional to 125,811.90, 188,711.73 and 46,920.06

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Solution

The fourth proportional to 125,811.90, 188,711.73 and 46,920.06 is: 70,377.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,811.90 : 188,711.73 = 46,920.06 : x
  2. Step 2: Convert to fraction form
    125,811.90/188,711.73 = 46,920.06/x
  3. Step 3: Cross multiply
    125,811.90x = 188,711.73 × 46,920.06
  4. Step 4: Simplify right side
    125,811.90x = 8,854,365,694.30
  5. Step 5: Solve for x
    x = 8,854,365,694.30/125,811.90
  6. Step 6: Final answer
    x = 70,377.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.