Home / 102,123.57-140,930.64-56,800.47

Finding the Fourth Proportional to 102,123.57, 140,930.64 and 56,800.47

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Solution

The fourth proportional to 102,123.57, 140,930.64 and 56,800.47 is: 78,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,123.57 : 140,930.64 = 56,800.47 : x
  2. Step 2: Convert to fraction form
    102,123.57/140,930.64 = 56,800.47/x
  3. Step 3: Cross multiply
    102,123.57x = 140,930.64 × 56,800.47
  4. Step 4: Simplify right side
    102,123.57x = 8,004,926,589.40
  5. Step 5: Solve for x
    x = 8,004,926,589.40/102,123.57
  6. Step 6: Final answer
    x = 78,384.71

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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.