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Finding the Fourth Proportional to 127,010.64, 190,477.02 and 87,819.60

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Solution

The fourth proportional to 127,010.64, 190,477.02 and 87,819.60 is: 131,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,010.64 : 190,477.02 = 87,819.60 : x
  2. Step 2: Convert to fraction form
    127,010.64/190,477.02 = 87,819.60/x
  3. Step 3: Cross multiply
    127,010.64x = 190,477.02 × 87,819.60
  4. Step 4: Simplify right side
    127,010.64x = 16,727,615,705.59
  5. Step 5: Solve for x
    x = 16,727,615,705.59/127,010.64
  6. Step 6: Final answer
    x = 131,702.48

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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.