Home / 140,309.12-210,457.92-77,939.84

Finding the Fourth Proportional to 140,309.12, 210,457.92 and 77,939.84

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Solution

The fourth proportional to 140,309.12, 210,457.92 and 77,939.84 is: 116,906.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,309.12 : 210,457.92 = 77,939.84 : x
  2. Step 2: Convert to fraction form
    140,309.12/210,457.92 = 77,939.84/x
  3. Step 3: Cross multiply
    140,309.12x = 210,457.92 × 77,939.84
  4. Step 4: Simplify right side
    140,309.12x = 16,403,056,611.53
  5. Step 5: Solve for x
    x = 16,403,056,611.53/140,309.12
  6. Step 6: Final answer
    x = 116,906.56

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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.