Home / 120,569.87-166,378.31-66,852.90

Finding the Fourth Proportional to 120,569.87, 166,378.31 and 66,852.90

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Solution

The fourth proportional to 120,569.87, 166,378.31 and 66,852.90 is: 92,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,569.87 : 166,378.31 = 66,852.90 : x
  2. Step 2: Convert to fraction form
    120,569.87/166,378.31 = 66,852.90/x
  3. Step 3: Cross multiply
    120,569.87x = 166,378.31 × 66,852.90
  4. Step 4: Simplify right side
    120,569.87x = 11,122,871,813.11
  5. Step 5: Solve for x
    x = 11,122,871,813.11/120,569.87
  6. Step 6: Final answer
    x = 92,252.50

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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.