Home / 102,115.53-140,908.64-56,786.22

Finding the Fourth Proportional to 102,115.53, 140,908.64 and 56,786.22

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Solution

The fourth proportional to 102,115.53, 140,908.64 and 56,786.22 is: 78,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,115.53 : 140,908.64 = 56,786.22 : x
  2. Step 2: Convert to fraction form
    102,115.53/140,908.64 = 56,786.22/x
  3. Step 3: Cross multiply
    102,115.53x = 140,908.64 × 56,786.22
  4. Step 4: Simplify right side
    102,115.53x = 8,001,668,747.01
  5. Step 5: Solve for x
    x = 8,001,668,747.01/102,115.53
  6. Step 6: Final answer
    x = 78,358.98

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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.