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Finding the Fourth Proportional to 118,709.66, 163,813.11 and 64,984.39

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Solution

The fourth proportional to 118,709.66, 163,813.11 and 64,984.39 is: 89,675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,709.66 : 163,813.11 = 64,984.39 : x
  2. Step 2: Convert to fraction form
    118,709.66/163,813.11 = 64,984.39/x
  3. Step 3: Cross multiply
    118,709.66x = 163,813.11 × 64,984.39
  4. Step 4: Simplify right side
    118,709.66x = 10,645,295,027.35
  5. Step 5: Solve for x
    x = 10,645,295,027.35/118,709.66
  6. Step 6: Final answer
    x = 89,675.05

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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.