Home / 103,388.36-142,680.34-58,680.52

Finding the Fourth Proportional to 103,388.36, 142,680.34 and 58,680.52

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Solution

The fourth proportional to 103,388.36, 142,680.34 and 58,680.52 is: 80,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,388.36 : 142,680.34 = 58,680.52 : x
  2. Step 2: Convert to fraction form
    103,388.36/142,680.34 = 58,680.52/x
  3. Step 3: Cross multiply
    103,388.36x = 142,680.34 × 58,680.52
  4. Step 4: Simplify right side
    103,388.36x = 8,372,556,544.98
  5. Step 5: Solve for x
    x = 8,372,556,544.98/103,388.36
  6. Step 6: Final answer
    x = 80,981.62

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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.