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Finding the Fourth Proportional to 123,996.81, 171,116.82 and 67,409.40

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Solution

The fourth proportional to 123,996.81, 171,116.82 and 67,409.40 is: 93,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,996.81 : 171,116.82 = 67,409.40 : x
  2. Step 2: Convert to fraction form
    123,996.81/171,116.82 = 67,409.40/x
  3. Step 3: Cross multiply
    123,996.81x = 171,116.82 × 67,409.40
  4. Step 4: Simplify right side
    123,996.81x = 11,534,882,166.11
  5. Step 5: Solve for x
    x = 11,534,882,166.11/123,996.81
  6. Step 6: Final answer
    x = 93,025.64

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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.