Home / 129,421.44-178,601.22-72,832.86

Finding the Fourth Proportional to 129,421.44, 178,601.22 and 72,832.86

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Solution

The fourth proportional to 129,421.44, 178,601.22 and 72,832.86 is: 100,509.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,421.44 : 178,601.22 = 72,832.86 : x
  2. Step 2: Convert to fraction form
    129,421.44/178,601.22 = 72,832.86/x
  3. Step 3: Cross multiply
    129,421.44x = 178,601.22 × 72,832.86
  4. Step 4: Simplify right side
    129,421.44x = 13,008,037,652.09
  5. Step 5: Solve for x
    x = 13,008,037,652.09/129,421.44
  6. Step 6: Final answer
    x = 100,509.14

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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.