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Finding the Fourth Proportional to 137,751.56, 190,099.96 and 77,326.56

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Solution

The fourth proportional to 137,751.56, 190,099.96 and 77,326.56 is: 106,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,751.56 : 190,099.96 = 77,326.56 : x
  2. Step 2: Convert to fraction form
    137,751.56/190,099.96 = 77,326.56/x
  3. Step 3: Cross multiply
    137,751.56x = 190,099.96 × 77,326.56
  4. Step 4: Simplify right side
    137,751.56x = 14,699,775,962.94
  5. Step 5: Solve for x
    x = 14,699,775,962.94/137,751.56
  6. Step 6: Final answer
    x = 106,712.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.