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Finding the Fourth Proportional to 130,296.44, 179,817.78 and 72,940.86

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Solution

The fourth proportional to 130,296.44, 179,817.78 and 72,940.86 is: 100,663.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,296.44 : 179,817.78 = 72,940.86 : x
  2. Step 2: Convert to fraction form
    130,296.44/179,817.78 = 72,940.86/x
  3. Step 3: Cross multiply
    130,296.44x = 179,817.78 × 72,940.86
  4. Step 4: Simplify right side
    130,296.44x = 13,116,063,516.49
  5. Step 5: Solve for x
    x = 13,116,063,516.49/130,296.44
  6. Step 6: Final answer
    x = 100,663.25

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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.