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Finding the Fourth Proportional to 86,179.76, 118,899.48 and 70,236.80

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Solution

The fourth proportional to 86,179.76, 118,899.48 and 70,236.80 is: 96,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,179.76 : 118,899.48 = 70,236.80 : x
  2. Step 2: Convert to fraction form
    86,179.76/118,899.48 = 70,236.80/x
  3. Step 3: Cross multiply
    86,179.76x = 118,899.48 × 70,236.80
  4. Step 4: Simplify right side
    86,179.76x = 8,351,118,996.86
  5. Step 5: Solve for x
    x = 8,351,118,996.86/86,179.76
  6. Step 6: Final answer
    x = 96,903.48

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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.