Home / 105,255.58-145,251.01-57,507.90

Finding the Fourth Proportional to 105,255.58, 145,251.01 and 57,507.90

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Solution

The fourth proportional to 105,255.58, 145,251.01 and 57,507.90 is: 79,359.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.58 : 145,251.01 = 57,507.90 : x
  2. Step 2: Convert to fraction form
    105,255.58/145,251.01 = 57,507.90/x
  3. Step 3: Cross multiply
    105,255.58x = 145,251.01 × 57,507.90
  4. Step 4: Simplify right side
    105,255.58x = 8,353,080,270.44
  5. Step 5: Solve for x
    x = 8,353,080,270.44/105,255.58
  6. Step 6: Final answer
    x = 79,359.98

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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.