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Finding the Fourth Proportional to 121,605.99, 167,809.22 and 67,894.38

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Solution

The fourth proportional to 121,605.99, 167,809.22 and 67,894.38 is: 93,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,605.99 : 167,809.22 = 67,894.38 : x
  2. Step 2: Convert to fraction form
    121,605.99/167,809.22 = 67,894.38/x
  3. Step 3: Cross multiply
    121,605.99x = 167,809.22 × 67,894.38
  4. Step 4: Simplify right side
    121,605.99x = 11,393,302,610.71
  5. Step 5: Solve for x
    x = 11,393,302,610.71/121,605.99
  6. Step 6: Final answer
    x = 93,690.31

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1.5x scale

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.