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Finding the Fourth Proportional to 121,384.88, 167,511.84 and 67,673.28

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Solution

The fourth proportional to 121,384.88, 167,511.84 and 67,673.28 is: 93,389.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,384.88 : 167,511.84 = 67,673.28 : x
  2. Step 2: Convert to fraction form
    121,384.88/167,511.84 = 67,673.28/x
  3. Step 3: Cross multiply
    121,384.88x = 167,511.84 × 67,673.28
  4. Step 4: Simplify right side
    121,384.88x = 11,336,075,651.64
  5. Step 5: Solve for x
    x = 11,336,075,651.64/121,384.88
  6. Step 6: Final answer
    x = 93,389.52

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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.