Home / 105,171.42-145,142.44-57,429.20

Finding the Fourth Proportional to 105,171.42, 145,142.44 and 57,429.20

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Solution

The fourth proportional to 105,171.42, 145,142.44 and 57,429.20 is: 79,255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,171.42 : 145,142.44 = 57,429.20 : x
  2. Step 2: Convert to fraction form
    105,171.42/145,142.44 = 57,429.20/x
  3. Step 3: Cross multiply
    105,171.42x = 145,142.44 × 57,429.20
  4. Step 4: Simplify right side
    105,171.42x = 8,335,414,215.25
  5. Step 5: Solve for x
    x = 8,335,414,215.25/105,171.42
  6. Step 6: Final answer
    x = 79,255.51

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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.