Home / 123,205.35-170,023.15-69,490.20

Finding the Fourth Proportional to 123,205.35, 170,023.15 and 69,490.20

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Solution

The fourth proportional to 123,205.35, 170,023.15 and 69,490.20 is: 95,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,205.35 : 170,023.15 = 69,490.20 : x
  2. Step 2: Convert to fraction form
    123,205.35/170,023.15 = 69,490.20/x
  3. Step 3: Cross multiply
    123,205.35x = 170,023.15 × 69,490.20
  4. Step 4: Simplify right side
    123,205.35x = 11,814,943,422.58
  5. Step 5: Solve for x
    x = 11,814,943,422.58/123,205.35
  6. Step 6: Final answer
    x = 95,896.35

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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.