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Finding the Fourth Proportional to 127,851.80, 191,705.70 and 48,968.60

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Solution

The fourth proportional to 127,851.80, 191,705.70 and 48,968.60 is: 73,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,851.80 : 191,705.70 = 48,968.60 : x
  2. Step 2: Convert to fraction form
    127,851.80/191,705.70 = 48,968.60/x
  3. Step 3: Cross multiply
    127,851.80x = 191,705.70 × 48,968.60
  4. Step 4: Simplify right side
    127,851.80x = 9,387,559,741.02
  5. Step 5: Solve for x
    x = 9,387,559,741.02/127,851.80
  6. Step 6: Final answer
    x = 73,425.32

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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.