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Finding the Fourth Proportional to 118,899.78, 178,223.91 and 43,971.78

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Solution

The fourth proportional to 118,899.78, 178,223.91 and 43,971.78 is: 65,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,899.78 : 178,223.91 = 43,971.78 : x
  2. Step 2: Convert to fraction form
    118,899.78/178,223.91 = 43,971.78/x
  3. Step 3: Cross multiply
    118,899.78x = 178,223.91 × 43,971.78
  4. Step 4: Simplify right side
    118,899.78x = 7,836,822,561.26
  5. Step 5: Solve for x
    x = 7,836,822,561.26/118,899.78
  6. Step 6: Final answer
    x = 65,911.16

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1.5x scale

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.