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Finding the Fourth Proportional to 156,435.94, 215,894.08 and 88,467.22

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Solution

The fourth proportional to 156,435.94, 215,894.08 and 88,467.22 is: 122,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,435.94 : 215,894.08 = 88,467.22 : x
  2. Step 2: Convert to fraction form
    156,435.94/215,894.08 = 88,467.22/x
  3. Step 3: Cross multiply
    156,435.94x = 215,894.08 × 88,467.22
  4. Step 4: Simplify right side
    156,435.94x = 19,099,549,072.06
  5. Step 5: Solve for x
    x = 19,099,549,072.06/156,435.94
  6. Step 6: Final answer
    x = 122,091.82

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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.