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Finding the Fourth Proportional to 171,984.60, 257,466.60 and 127,807.20

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Solution

The fourth proportional to 171,984.60, 257,466.60 and 127,807.20 is: 191,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,984.60 : 257,466.60 = 127,807.20 : x
  2. Step 2: Convert to fraction form
    171,984.60/257,466.60 = 127,807.20/x
  3. Step 3: Cross multiply
    171,984.60x = 257,466.60 × 127,807.20
  4. Step 4: Simplify right side
    171,984.60x = 32,906,085,239.52
  5. Step 5: Solve for x
    x = 32,906,085,239.52/171,984.60
  6. Step 6: Final answer
    x = 191,331.58

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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.