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Finding the Fourth Proportional to 140,505.70, 193,900.71 and 76,847.59

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Solution

The fourth proportional to 140,505.70, 193,900.71 and 76,847.59 is: 106,051.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,505.70 : 193,900.71 = 76,847.59 : x
  2. Step 2: Convert to fraction form
    140,505.70/193,900.71 = 76,847.59/x
  3. Step 3: Cross multiply
    140,505.70x = 193,900.71 × 76,847.59
  4. Step 4: Simplify right side
    140,505.70x = 14,900,802,262.79
  5. Step 5: Solve for x
    x = 14,900,802,262.79/140,505.70
  6. Step 6: Final answer
    x = 106,051.23

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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.