Home / 118,708.83-178,077.32-74,339.26

Finding the Fourth Proportional to 118,708.83, 178,077.32 and 74,339.26

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Solution

The fourth proportional to 118,708.83, 178,077.32 and 74,339.26 is: 111,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,708.83 : 178,077.32 = 74,339.26 : x
  2. Step 2: Convert to fraction form
    118,708.83/178,077.32 = 74,339.26/x
  3. Step 3: Cross multiply
    118,708.83x = 178,077.32 × 74,339.26
  4. Step 4: Simplify right side
    118,708.83x = 13,238,136,191.58
  5. Step 5: Solve for x
    x = 13,238,136,191.58/118,708.83
  6. Step 6: Final answer
    x = 111,517.70

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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.