Home / 105,532.12-145,634.56-57,134.56

Finding the Fourth Proportional to 105,532.12, 145,634.56 and 57,134.56

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Solution

The fourth proportional to 105,532.12, 145,634.56 and 57,134.56 is: 78,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,532.12 : 145,634.56 = 57,134.56 : x
  2. Step 2: Convert to fraction form
    105,532.12/145,634.56 = 57,134.56/x
  3. Step 3: Cross multiply
    105,532.12x = 145,634.56 × 57,134.56
  4. Step 4: Simplify right side
    105,532.12x = 8,320,765,492.55
  5. Step 5: Solve for x
    x = 8,320,765,492.55/105,532.12
  6. Step 6: Final answer
    x = 78,845.81

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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.