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Finding the Fourth Proportional to 142,290.54, 196,401.92 and 93,927.80

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Solution

The fourth proportional to 142,290.54, 196,401.92 and 93,927.80 is: 129,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,290.54 : 196,401.92 = 93,927.80 : x
  2. Step 2: Convert to fraction form
    142,290.54/196,401.92 = 93,927.80/x
  3. Step 3: Cross multiply
    142,290.54x = 196,401.92 × 93,927.80
  4. Step 4: Simplify right side
    142,290.54x = 18,447,600,282.74
  5. Step 5: Solve for x
    x = 18,447,600,282.74/142,290.54
  6. Step 6: Final answer
    x = 129,647.41

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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.