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Finding the Fourth Proportional to 140,508.70, 210,720.57 and 73,912.12

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Solution

The fourth proportional to 140,508.70, 210,720.57 and 73,912.12 is: 110,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,508.70 : 210,720.57 = 73,912.12 : x
  2. Step 2: Convert to fraction form
    140,508.70/210,720.57 = 73,912.12/x
  3. Step 3: Cross multiply
    140,508.70x = 210,720.57 × 73,912.12
  4. Step 4: Simplify right side
    140,508.70x = 15,574,804,056.31
  5. Step 5: Solve for x
    x = 15,574,804,056.31/140,508.70
  6. Step 6: Final answer
    x = 110,845.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.