Home / 120,485.58-166,289.67-115,170.36

Finding the Fourth Proportional to 120,485.58, 166,289.67 and 115,170.36

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Solution

The fourth proportional to 120,485.58, 166,289.67 and 115,170.36 is: 158,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,485.58 : 166,289.67 = 115,170.36 : x
  2. Step 2: Convert to fraction form
    120,485.58/166,289.67 = 115,170.36/x
  3. Step 3: Cross multiply
    120,485.58x = 166,289.67 × 115,170.36
  4. Step 4: Simplify right side
    120,485.58x = 19,151,641,158.18
  5. Step 5: Solve for x
    x = 19,151,641,158.18/120,485.58
  6. Step 6: Final answer
    x = 158,953.80

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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.