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Finding the Fourth Proportional to 121,075.49, 167,166.48 and 75,771.79

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Solution

The fourth proportional to 121,075.49, 167,166.48 and 75,771.79 is: 104,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,075.49 : 167,166.48 = 75,771.79 : x
  2. Step 2: Convert to fraction form
    121,075.49/167,166.48 = 75,771.79/x
  3. Step 3: Cross multiply
    121,075.49x = 167,166.48 × 75,771.79
  4. Step 4: Simplify right side
    121,075.49x = 12,666,503,283.83
  5. Step 5: Solve for x
    x = 12,666,503,283.83/121,075.49
  6. Step 6: Final answer
    x = 104,616.57

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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.