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Finding the Fourth Proportional to 125,458.93, 188,067.44 and 42,307.57

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Solution

The fourth proportional to 125,458.93, 188,067.44 and 42,307.57 is: 63,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,458.93 : 188,067.44 = 42,307.57 : x
  2. Step 2: Convert to fraction form
    125,458.93/188,067.44 = 42,307.57/x
  3. Step 3: Cross multiply
    125,458.93x = 188,067.44 × 42,307.57
  4. Step 4: Simplify right side
    125,458.93x = 7,956,676,170.98
  5. Step 5: Solve for x
    x = 7,956,676,170.98/125,458.93
  6. Step 6: Final answer
    x = 63,420.56

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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.