Home / 204,003.80-306,005.70-85,643.36

Finding the Fourth Proportional to 204,003.80, 306,005.70 and 85,643.36

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Solution

The fourth proportional to 204,003.80, 306,005.70 and 85,643.36 is: 128,465.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,003.80 : 306,005.70 = 85,643.36 : x
  2. Step 2: Convert to fraction form
    204,003.80/306,005.70 = 85,643.36/x
  3. Step 3: Cross multiply
    204,003.80x = 306,005.70 × 85,643.36
  4. Step 4: Simplify right side
    204,003.80x = 26,207,356,327.15
  5. Step 5: Solve for x
    x = 26,207,356,327.15/204,003.80
  6. Step 6: Final answer
    x = 128,465.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.