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Finding the Fourth Proportional to 103,674.77, 142,940.40 and 67,807.97

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Solution

The fourth proportional to 103,674.77, 142,940.40 and 67,807.97 is: 93,489.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,674.77 : 142,940.40 = 67,807.97 : x
  2. Step 2: Convert to fraction form
    103,674.77/142,940.40 = 67,807.97/x
  3. Step 3: Cross multiply
    103,674.77x = 142,940.40 × 67,807.97
  4. Step 4: Simplify right side
    103,674.77x = 9,692,498,354.99
  5. Step 5: Solve for x
    x = 9,692,498,354.99/103,674.77
  6. Step 6: Final answer
    x = 93,489.46

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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.