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Finding the Fourth Proportional to 168,970.08, 253,218.24 and 131,358

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Solution

The fourth proportional to 168,970.08, 253,218.24 and 131,358 is: 196,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,970.08 : 253,218.24 = 131,358 : x
  2. Step 2: Convert to fraction form
    168,970.08/253,218.24 = 131,358/x
  3. Step 3: Cross multiply
    168,970.08x = 253,218.24 × 131,358
  4. Step 4: Simplify right side
    168,970.08x = 33,262,241,569.92
  5. Step 5: Solve for x
    x = 33,262,241,569.92/168,970.08
  6. Step 6: Final answer
    x = 196,852.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.