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Finding the Fourth Proportional to 105,650.67, 145,791.32 and 57,900.63

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Solution

The fourth proportional to 105,650.67, 145,791.32 and 57,900.63 is: 79,899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,650.67 : 145,791.32 = 57,900.63 : x
  2. Step 2: Convert to fraction form
    105,650.67/145,791.32 = 57,900.63/x
  3. Step 3: Cross multiply
    105,650.67x = 145,791.32 × 57,900.63
  4. Step 4: Simplify right side
    105,650.67x = 8,441,408,987.03
  5. Step 5: Solve for x
    x = 8,441,408,987.03/105,650.67
  6. Step 6: Final answer
    x = 79,899.25

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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.