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Finding the Fourth Proportional to 104,169.78, 143,754.39 and 56,423.25

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Solution

The fourth proportional to 104,169.78, 143,754.39 and 56,423.25 is: 77,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,169.78 : 143,754.39 = 56,423.25 : x
  2. Step 2: Convert to fraction form
    104,169.78/143,754.39 = 56,423.25/x
  3. Step 3: Cross multiply
    104,169.78x = 143,754.39 × 56,423.25
  4. Step 4: Simplify right side
    104,169.78x = 8,111,089,885.57
  5. Step 5: Solve for x
    x = 8,111,089,885.57/104,169.78
  6. Step 6: Final answer
    x = 77,864.14

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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.