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Finding the Fourth Proportional to 156,454.69, 215,898.87 and 88,467.76

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Solution

The fourth proportional to 156,454.69, 215,898.87 and 88,467.76 is: 122,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,454.69 : 215,898.87 = 88,467.76 : x
  2. Step 2: Convert to fraction form
    156,454.69/215,898.87 = 88,467.76/x
  3. Step 3: Cross multiply
    156,454.69x = 215,898.87 × 88,467.76
  4. Step 4: Simplify right side
    156,454.69x = 19,100,089,415.43
  5. Step 5: Solve for x
    x = 19,100,089,415.43/156,454.69
  6. Step 6: Final answer
    x = 122,080.64

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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.