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Finding the Fourth Proportional to 118,709.72, 163,819.68 and 64,998.26

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Solution

The fourth proportional to 118,709.72, 163,819.68 and 64,998.26 is: 89,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,709.72 : 163,819.68 = 64,998.26 : x
  2. Step 2: Convert to fraction form
    118,709.72/163,819.68 = 64,998.26/x
  3. Step 3: Cross multiply
    118,709.72x = 163,819.68 × 64,998.26
  4. Step 4: Simplify right side
    118,709.72x = 10,647,994,153.76
  5. Step 5: Solve for x
    x = 10,647,994,153.76/118,709.72
  6. Step 6: Final answer
    x = 89,697.74

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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.