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Finding the Fourth Proportional to 129,079.56, 178,079.88 and 95,168.51

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Solution

The fourth proportional to 129,079.56, 178,079.88 and 95,168.51 is: 131,295.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,079.56 : 178,079.88 = 95,168.51 : x
  2. Step 2: Convert to fraction form
    129,079.56/178,079.88 = 95,168.51/x
  3. Step 3: Cross multiply
    129,079.56x = 178,079.88 × 95,168.51
  4. Step 4: Simplify right side
    129,079.56x = 16,947,596,840.58
  5. Step 5: Solve for x
    x = 16,947,596,840.58/129,079.56
  6. Step 6: Final answer
    x = 131,295.74

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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.