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Finding the Fourth Proportional to 140,698.88, 194,162.98 and 76,166.67

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Solution

The fourth proportional to 140,698.88, 194,162.98 and 76,166.67 is: 105,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,698.88 : 194,162.98 = 76,166.67 : x
  2. Step 2: Convert to fraction form
    140,698.88/194,162.98 = 76,166.67/x
  3. Step 3: Cross multiply
    140,698.88x = 194,162.98 × 76,166.67
  4. Step 4: Simplify right side
    140,698.88x = 14,788,747,433.46
  5. Step 5: Solve for x
    x = 14,788,747,433.46/140,698.88
  6. Step 6: Final answer
    x = 105,109.20

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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.