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Finding the Fourth Proportional to 156,313.50, 215,709.80 and 88,329

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Solution

The fourth proportional to 156,313.50, 215,709.80 and 88,329 is: 121,892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,313.50 : 215,709.80 = 88,329 : x
  2. Step 2: Convert to fraction form
    156,313.50/215,709.80 = 88,329/x
  3. Step 3: Cross multiply
    156,313.50x = 215,709.80 × 88,329
  4. Step 4: Simplify right side
    156,313.50x = 19,053,430,924.20
  5. Step 5: Solve for x
    x = 19,053,430,924.20/156,313.50
  6. Step 6: Final answer
    x = 121,892.42

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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.