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Finding the Fourth Proportional to 125,342.19, 187,919.78 and 75,410.59

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Solution

The fourth proportional to 125,342.19, 187,919.78 and 75,410.59 is: 113,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,342.19 : 187,919.78 = 75,410.59 : x
  2. Step 2: Convert to fraction form
    125,342.19/187,919.78 = 75,410.59/x
  3. Step 3: Cross multiply
    125,342.19x = 187,919.78 × 75,410.59
  4. Step 4: Simplify right side
    125,342.19x = 14,171,140,918.41
  5. Step 5: Solve for x
    x = 14,171,140,918.41/125,342.19
  6. Step 6: Final answer
    x = 113,059.62

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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.