Home / 118,878.08-178,326.40-39,991.68

Finding the Fourth Proportional to 118,878.08, 178,326.40 and 39,991.68

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Solution

The fourth proportional to 118,878.08, 178,326.40 and 39,991.68 is: 59,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,878.08 : 178,326.40 = 39,991.68 : x
  2. Step 2: Convert to fraction form
    118,878.08/178,326.40 = 39,991.68/x
  3. Step 3: Cross multiply
    118,878.08x = 178,326.40 × 39,991.68
  4. Step 4: Simplify right side
    118,878.08x = 7,131,572,324.35
  5. Step 5: Solve for x
    x = 7,131,572,324.35/118,878.08
  6. Step 6: Final answer
    x = 59,990.64

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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.