Home / 120,857.20-181,285.80-76,339.60

Finding the Fourth Proportional to 120,857.20, 181,285.80 and 76,339.60

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Solution

The fourth proportional to 120,857.20, 181,285.80 and 76,339.60 is: 114,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,857.20 : 181,285.80 = 76,339.60 : x
  2. Step 2: Convert to fraction form
    120,857.20/181,285.80 = 76,339.60/x
  3. Step 3: Cross multiply
    120,857.20x = 181,285.80 × 76,339.60
  4. Step 4: Simplify right side
    120,857.20x = 13,839,285,457.68
  5. Step 5: Solve for x
    x = 13,839,285,457.68/120,857.20
  6. Step 6: Final answer
    x = 114,509.40

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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.