Home / 123,485.40-170,409.82-66,896.76

Finding the Fourth Proportional to 123,485.40, 170,409.82 and 66,896.76

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Solution

The fourth proportional to 123,485.40, 170,409.82 and 66,896.76 is: 92,317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,485.40 : 170,409.82 = 66,896.76 : x
  2. Step 2: Convert to fraction form
    123,485.40/170,409.82 = 66,896.76/x
  3. Step 3: Cross multiply
    123,485.40x = 170,409.82 × 66,896.76
  4. Step 4: Simplify right side
    123,485.40x = 11,399,864,830.18
  5. Step 5: Solve for x
    x = 11,399,864,830.18/123,485.40
  6. Step 6: Final answer
    x = 92,317.51

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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.