Home / 119,118.32-178,639.59-39,137.86

Finding the Fourth Proportional to 119,118.32, 178,639.59 and 39,137.86

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Solution

The fourth proportional to 119,118.32, 178,639.59 and 39,137.86 is: 58,694.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,118.32 : 178,639.59 = 39,137.86 : x
  2. Step 2: Convert to fraction form
    119,118.32/178,639.59 = 39,137.86/x
  3. Step 3: Cross multiply
    119,118.32x = 178,639.59 × 39,137.86
  4. Step 4: Simplify right side
    119,118.32x = 6,991,570,408.95
  5. Step 5: Solve for x
    x = 6,991,570,408.95/119,118.32
  6. Step 6: Final answer
    x = 58,694.33

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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.