Home / 105,532.76-145,635.45-57,135.20

Finding the Fourth Proportional to 105,532.76, 145,635.45 and 57,135.20

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Solution

The fourth proportional to 105,532.76, 145,635.45 and 57,135.20 is: 78,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,532.76 : 145,635.45 = 57,135.20 : x
  2. Step 2: Convert to fraction form
    105,532.76/145,635.45 = 57,135.20/x
  3. Step 3: Cross multiply
    105,532.76x = 145,635.45 × 57,135.20
  4. Step 4: Simplify right side
    105,532.76x = 8,320,910,562.84
  5. Step 5: Solve for x
    x = 8,320,910,562.84/105,532.76
  6. Step 6: Final answer
    x = 78,846.71

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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.