Home / 118,731.16-178,162.32-66,170.26

Finding the Fourth Proportional to 118,731.16, 178,162.32 and 66,170.26

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Solution

The fourth proportional to 118,731.16, 178,162.32 and 66,170.26 is: 99,291.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,731.16 : 178,162.32 = 66,170.26 : x
  2. Step 2: Convert to fraction form
    118,731.16/178,162.32 = 66,170.26/x
  3. Step 3: Cross multiply
    118,731.16x = 178,162.32 × 66,170.26
  4. Step 4: Simplify right side
    118,731.16x = 11,789,047,036.60
  5. Step 5: Solve for x
    x = 11,789,047,036.60/118,731.16
  6. Step 6: Final answer
    x = 99,291.94

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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.