Home / 105,387.57-158,089.64-30,508.88

Finding the Fourth Proportional to 105,387.57, 158,089.64 and 30,508.88

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Solution

The fourth proportional to 105,387.57, 158,089.64 and 30,508.88 is: 45,765.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,387.57 : 158,089.64 = 30,508.88 : x
  2. Step 2: Convert to fraction form
    105,387.57/158,089.64 = 30,508.88/x
  3. Step 3: Cross multiply
    105,387.57x = 158,089.64 × 30,508.88
  4. Step 4: Simplify right side
    105,387.57x = 4,823,136,913.01
  5. Step 5: Solve for x
    x = 4,823,136,913.01/105,387.57
  6. Step 6: Final answer
    x = 45,765.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.