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Finding the Fourth Proportional to 140,354.55, 210,615.21 and 51,670.35

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Solution

The fourth proportional to 140,354.55, 210,615.21 and 51,670.35 is: 77,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,354.55 : 210,615.21 = 51,670.35 : x
  2. Step 2: Convert to fraction form
    140,354.55/210,615.21 = 51,670.35/x
  3. Step 3: Cross multiply
    140,354.55x = 210,615.21 × 51,670.35
  4. Step 4: Simplify right side
    140,354.55x = 10,882,561,616.02
  5. Step 5: Solve for x
    x = 10,882,561,616.02/140,354.55
  6. Step 6: Final answer
    x = 77,536.22

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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.