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Finding the Fourth Proportional to 140,644.71, 210,987.42 and 40,805.34

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Solution

The fourth proportional to 140,644.71, 210,987.42 and 40,805.34 is: 61,213.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,644.71 : 210,987.42 = 40,805.34 : x
  2. Step 2: Convert to fraction form
    140,644.71/210,987.42 = 40,805.34/x
  3. Step 3: Cross multiply
    140,644.71x = 210,987.42 × 40,805.34
  4. Step 4: Simplify right side
    140,644.71x = 8,609,413,408.82
  5. Step 5: Solve for x
    x = 8,609,413,408.82/140,644.71
  6. Step 6: Final answer
    x = 61,213.92

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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.