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Finding the Fourth Proportional to 140,999.96, 211,432.98 and 81,853.76

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Solution

The fourth proportional to 140,999.96, 211,432.98 and 81,853.76 is: 122,741.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,999.96 : 211,432.98 = 81,853.76 : x
  2. Step 2: Convert to fraction form
    140,999.96/211,432.98 = 81,853.76/x
  3. Step 3: Cross multiply
    140,999.96x = 211,432.98 × 81,853.76
  4. Step 4: Simplify right side
    140,999.96x = 17,306,584,401.00
  5. Step 5: Solve for x
    x = 17,306,584,401.00/140,999.96
  6. Step 6: Final answer
    x = 122,741.77

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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.