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Finding the Fourth Proportional to 121,476.94, 167,638.32 and 67,765.39

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Solution

The fourth proportional to 121,476.94, 167,638.32 and 67,765.39 is: 93,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,476.94 : 167,638.32 = 67,765.39 : x
  2. Step 2: Convert to fraction form
    121,476.94/167,638.32 = 67,765.39/x
  3. Step 3: Cross multiply
    121,476.94x = 167,638.32 × 67,765.39
  4. Step 4: Simplify right side
    121,476.94x = 11,360,075,714.65
  5. Step 5: Solve for x
    x = 11,360,075,714.65/121,476.94
  6. Step 6: Final answer
    x = 93,516.32

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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.