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Finding the Fourth Proportional to 125,500.69, 188,274.27 and 74,987.83

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Solution

The fourth proportional to 125,500.69, 188,274.27 and 74,987.83 is: 112,495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,500.69 : 188,274.27 = 74,987.83 : x
  2. Step 2: Convert to fraction form
    125,500.69/188,274.27 = 74,987.83/x
  3. Step 3: Cross multiply
    125,500.69x = 188,274.27 × 74,987.83
  4. Step 4: Simplify right side
    125,500.69x = 14,118,278,409.64
  5. Step 5: Solve for x
    x = 14,118,278,409.64/125,500.69
  6. Step 6: Final answer
    x = 112,495.62

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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.