Home / 120,723.60-181,085.40-76,108.80

Finding the Fourth Proportional to 120,723.60, 181,085.40 and 76,108.80

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Solution

The fourth proportional to 120,723.60, 181,085.40 and 76,108.80 is: 114,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,723.60 : 181,085.40 = 76,108.80 : x
  2. Step 2: Convert to fraction form
    120,723.60/181,085.40 = 76,108.80/x
  3. Step 3: Cross multiply
    120,723.60x = 181,085.40 × 76,108.80
  4. Step 4: Simplify right side
    120,723.60x = 13,782,192,491.52
  5. Step 5: Solve for x
    x = 13,782,192,491.52/120,723.60
  6. Step 6: Final answer
    x = 114,163.20

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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.