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Finding the Fourth Proportional to 108,075.78, 149,144.00 and 62,764.90

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Solution

The fourth proportional to 108,075.78, 149,144.00 and 62,764.90 is: 86,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,075.78 : 149,144.00 = 62,764.90 : x
  2. Step 2: Convert to fraction form
    108,075.78/149,144.00 = 62,764.90/x
  3. Step 3: Cross multiply
    108,075.78x = 149,144.00 × 62,764.90
  4. Step 4: Simplify right side
    108,075.78x = 9,361,007,558.92
  5. Step 5: Solve for x
    x = 9,361,007,558.92/108,075.78
  6. Step 6: Final answer
    x = 86,615.22

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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.