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Finding the Fourth Proportional to 140,516.72, 210,732.54 and 73,920.12

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Solution

The fourth proportional to 140,516.72, 210,732.54 and 73,920.12 is: 110,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,516.72 : 210,732.54 = 73,920.12 : x
  2. Step 2: Convert to fraction form
    140,516.72/210,732.54 = 73,920.12/x
  3. Step 3: Cross multiply
    140,516.72x = 210,732.54 × 73,920.12
  4. Step 4: Simplify right side
    140,516.72x = 15,577,374,644.70
  5. Step 5: Solve for x
    x = 15,577,374,644.70/140,516.72
  6. Step 6: Final answer
    x = 110,857.80

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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.