Home / 103,135.23-142,324.06-57,194.61

Finding the Fourth Proportional to 103,135.23, 142,324.06 and 57,194.61

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Solution

The fourth proportional to 103,135.23, 142,324.06 and 57,194.61 is: 78,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,135.23 : 142,324.06 = 57,194.61 : x
  2. Step 2: Convert to fraction form
    103,135.23/142,324.06 = 57,194.61/x
  3. Step 3: Cross multiply
    103,135.23x = 142,324.06 × 57,194.61
  4. Step 4: Simplify right side
    103,135.23x = 8,140,168,819.34
  5. Step 5: Solve for x
    x = 8,140,168,819.34/103,135.23
  6. Step 6: Final answer
    x = 78,927.14

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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.