Home / 156,538.32-234,512.22-121,305.74

Finding the Fourth Proportional to 156,538.32, 234,512.22 and 121,305.74

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Solution

The fourth proportional to 156,538.32, 234,512.22 and 121,305.74 is: 181,729.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,538.32 : 234,512.22 = 121,305.74 : x
  2. Step 2: Convert to fraction form
    156,538.32/234,512.22 = 121,305.74/x
  3. Step 3: Cross multiply
    156,538.32x = 234,512.22 × 121,305.74
  4. Step 4: Simplify right side
    156,538.32x = 28,447,678,386.14
  5. Step 5: Solve for x
    x = 28,447,678,386.14/156,538.32
  6. Step 6: Final answer
    x = 181,729.81

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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.