Home / 159,739.40-220,511.22-103,178.36

Finding the Fourth Proportional to 159,739.40, 220,511.22 and 103,178.36

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Solution

The fourth proportional to 159,739.40, 220,511.22 and 103,178.36 is: 142,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,739.40 : 220,511.22 = 103,178.36 : x
  2. Step 2: Convert to fraction form
    159,739.40/220,511.22 = 103,178.36/x
  3. Step 3: Cross multiply
    159,739.40x = 220,511.22 × 103,178.36
  4. Step 4: Simplify right side
    159,739.40x = 22,751,986,041.20
  5. Step 5: Solve for x
    x = 22,751,986,041.20/159,739.40
  6. Step 6: Final answer
    x = 142,431.90

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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.