Home / 123,378.93-170,263.46-66,790.31

Finding the Fourth Proportional to 123,378.93, 170,263.46 and 66,790.31

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Solution

The fourth proportional to 123,378.93, 170,263.46 and 66,790.31 is: 92,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,378.93 : 170,263.46 = 66,790.31 : x
  2. Step 2: Convert to fraction form
    123,378.93/170,263.46 = 66,790.31/x
  3. Step 3: Cross multiply
    123,378.93x = 170,263.46 × 66,790.31
  4. Step 4: Simplify right side
    123,378.93x = 11,371,948,590.73
  5. Step 5: Solve for x
    x = 11,371,948,590.73/123,378.93
  6. Step 6: Final answer
    x = 92,170.91

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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.