Home / 118,985.86-178,421.37-69,078.52

Finding the Fourth Proportional to 118,985.86, 178,421.37 and 69,078.52

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Solution

The fourth proportional to 118,985.86, 178,421.37 and 69,078.52 is: 103,584.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,985.86 : 178,421.37 = 69,078.52 : x
  2. Step 2: Convert to fraction form
    118,985.86/178,421.37 = 69,078.52/x
  3. Step 3: Cross multiply
    118,985.86x = 178,421.37 × 69,078.52
  4. Step 4: Simplify right side
    118,985.86x = 12,325,084,175.97
  5. Step 5: Solve for x
    x = 12,325,084,175.97/118,985.86
  6. Step 6: Final answer
    x = 103,584.44

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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.