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Finding the Fourth Proportional to 103,274.48, 154,919.12 and 43,242.55

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Solution

The fourth proportional to 103,274.48, 154,919.12 and 43,242.55 is: 64,866.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,274.48 : 154,919.12 = 43,242.55 : x
  2. Step 2: Convert to fraction form
    103,274.48/154,919.12 = 43,242.55/x
  3. Step 3: Cross multiply
    103,274.48x = 154,919.12 × 43,242.55
  4. Step 4: Simplify right side
    103,274.48x = 6,699,097,792.56
  5. Step 5: Solve for x
    x = 6,699,097,792.56/103,274.48
  6. Step 6: Final answer
    x = 64,866.92

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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.