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Finding the Fourth Proportional to 140,893.80, 210,990.10 and 98,575.90

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Solution

The fourth proportional to 140,893.80, 210,990.10 and 98,575.90 is: 147,618.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,893.80 : 210,990.10 = 98,575.90 : x
  2. Step 2: Convert to fraction form
    140,893.80/210,990.10 = 98,575.90/x
  3. Step 3: Cross multiply
    140,893.80x = 210,990.10 × 98,575.90
  4. Step 4: Simplify right side
    140,893.80x = 20,798,538,998.59
  5. Step 5: Solve for x
    x = 20,798,538,998.59/140,893.80
  6. Step 6: Final answer
    x = 147,618.55

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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.