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Finding the Fourth Proportional to 140,554.92, 210,860.55 and 51,808.80

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Solution

The fourth proportional to 140,554.92, 210,860.55 and 51,808.80 is: 77,723.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,554.92 : 210,860.55 = 51,808.80 : x
  2. Step 2: Convert to fraction form
    140,554.92/210,860.55 = 51,808.80/x
  3. Step 3: Cross multiply
    140,554.92x = 210,860.55 × 51,808.80
  4. Step 4: Simplify right side
    140,554.92x = 10,924,432,062.84
  5. Step 5: Solve for x
    x = 10,924,432,062.84/140,554.92
  6. Step 6: Final answer
    x = 77,723.58

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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.