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Finding the Fourth Proportional to 140,143, 193,401.44 and 76,484.88

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Solution

The fourth proportional to 140,143, 193,401.44 and 76,484.88 is: 105,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143 : 193,401.44 = 76,484.88 : x
  2. Step 2: Convert to fraction form
    140,143/193,401.44 = 76,484.88/x
  3. Step 3: Cross multiply
    140,143x = 193,401.44 × 76,484.88
  4. Step 4: Simplify right side
    140,143x = 14,792,285,930.23
  5. Step 5: Solve for x
    x = 14,792,285,930.23/140,143
  6. Step 6: Final answer
    x = 105,551.37

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1.5x scale

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.