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Finding the Fourth Proportional to 118,897.78, 178,220.91 and 43,969.78

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Solution

The fourth proportional to 118,897.78, 178,220.91 and 43,969.78 is: 65,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,897.78 : 178,220.91 = 43,969.78 : x
  2. Step 2: Convert to fraction form
    118,897.78/178,220.91 = 43,969.78/x
  3. Step 3: Cross multiply
    118,897.78x = 178,220.91 × 43,969.78
  4. Step 4: Simplify right side
    118,897.78x = 7,836,334,204.10
  5. Step 5: Solve for x
    x = 7,836,334,204.10/118,897.78
  6. Step 6: Final answer
    x = 65,908.16

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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.