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Finding the Fourth Proportional to 129,622.64, 178,879.23 and 70,006.64

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Solution

The fourth proportional to 129,622.64, 178,879.23 and 70,006.64 is: 96,609.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622.64 : 178,879.23 = 70,006.64 : x
  2. Step 2: Convert to fraction form
    129,622.64/178,879.23 = 70,006.64/x
  3. Step 3: Cross multiply
    129,622.64x = 178,879.23 × 70,006.64
  4. Step 4: Simplify right side
    129,622.64x = 12,522,733,858.09
  5. Step 5: Solve for x
    x = 12,522,733,858.09/129,622.64
  6. Step 6: Final answer
    x = 96,609.16

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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.