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Finding the Fourth Proportional to 162,433.16, 243,649.73 and 79,255.88

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Solution

The fourth proportional to 162,433.16, 243,649.73 and 79,255.88 is: 118,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,433.16 : 243,649.73 = 79,255.88 : x
  2. Step 2: Convert to fraction form
    162,433.16/243,649.73 = 79,255.88/x
  3. Step 3: Cross multiply
    162,433.16x = 243,649.73 × 79,255.88
  4. Step 4: Simplify right side
    162,433.16x = 19,310,672,742.80
  5. Step 5: Solve for x
    x = 19,310,672,742.80/162,433.16
  6. Step 6: Final answer
    x = 118,883.81

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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.