Home / 102,105.34-140,909.04-56,787.96

Finding the Fourth Proportional to 102,105.34, 140,909.04 and 56,787.96

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Solution

The fourth proportional to 102,105.34, 140,909.04 and 56,787.96 is: 78,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,105.34 : 140,909.04 = 56,787.96 : x
  2. Step 2: Convert to fraction form
    102,105.34/140,909.04 = 56,787.96/x
  3. Step 3: Cross multiply
    102,105.34x = 140,909.04 × 56,787.96
  4. Step 4: Simplify right side
    102,105.34x = 8,001,936,927.16
  5. Step 5: Solve for x
    x = 8,001,936,927.16/102,105.34
  6. Step 6: Final answer
    x = 78,369.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.