Home / 102,122.57-140,929.26-56,799.47

Finding the Fourth Proportional to 102,122.57, 140,929.26 and 56,799.47

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Solution

The fourth proportional to 102,122.57, 140,929.26 and 56,799.47 is: 78,383.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,122.57 : 140,929.26 = 56,799.47 : x
  2. Step 2: Convert to fraction form
    102,122.57/140,929.26 = 56,799.47/x
  3. Step 3: Cross multiply
    102,122.57x = 140,929.26 × 56,799.47
  4. Step 4: Simplify right side
    102,122.57x = 8,004,707,275.49
  5. Step 5: Solve for x
    x = 8,004,707,275.49/102,122.57
  6. Step 6: Final answer
    x = 78,383.33

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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.