Home / 123,380.24-170,255.40-69,657.80

Finding the Fourth Proportional to 123,380.24, 170,255.40 and 69,657.80

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Solution

The fourth proportional to 123,380.24, 170,255.40 and 69,657.80 is: 96,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,380.24 : 170,255.40 = 69,657.80 : x
  2. Step 2: Convert to fraction form
    123,380.24/170,255.40 = 69,657.80/x
  3. Step 3: Cross multiply
    123,380.24x = 170,255.40 × 69,657.80
  4. Step 4: Simplify right side
    123,380.24x = 11,859,616,602.12
  5. Step 5: Solve for x
    x = 11,859,616,602.12/123,380.24
  6. Step 6: Final answer
    x = 96,122.50

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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.