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Finding the Fourth Proportional to 103,799.92, 143,267.21 and 67,969.12

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Solution

The fourth proportional to 103,799.92, 143,267.21 and 67,969.12 is: 93,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,799.92 : 143,267.21 = 67,969.12 : x
  2. Step 2: Convert to fraction form
    103,799.92/143,267.21 = 67,969.12/x
  3. Step 3: Cross multiply
    103,799.92x = 143,267.21 × 67,969.12
  4. Step 4: Simplify right side
    103,799.92x = 9,737,745,848.71
  5. Step 5: Solve for x
    x = 9,737,745,848.71/103,799.92
  6. Step 6: Final answer
    x = 93,812.65

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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.