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Finding the Fourth Proportional to 140,274.87, 193,579.01 and 76,612.67

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Solution

The fourth proportional to 140,274.87, 193,579.01 and 76,612.67 is: 105,725.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,274.87 : 193,579.01 = 76,612.67 : x
  2. Step 2: Convert to fraction form
    140,274.87/193,579.01 = 76,612.67/x
  3. Step 3: Cross multiply
    140,274.87x = 193,579.01 × 76,612.67
  4. Step 4: Simplify right side
    140,274.87x = 14,830,603,461.10
  5. Step 5: Solve for x
    x = 14,830,603,461.10/140,274.87
  6. Step 6: Final answer
    x = 105,725.31

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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.