Home / 102,118.70-140,913.06-56,789.35

Finding the Fourth Proportional to 102,118.70, 140,913.06 and 56,789.35

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Solution

The fourth proportional to 102,118.70, 140,913.06 and 56,789.35 is: 78,363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,118.70 : 140,913.06 = 56,789.35 : x
  2. Step 2: Convert to fraction form
    102,118.70/140,913.06 = 56,789.35/x
  3. Step 3: Cross multiply
    102,118.70x = 140,913.06 × 56,789.35
  4. Step 4: Simplify right side
    102,118.70x = 8,002,361,083.91
  5. Step 5: Solve for x
    x = 8,002,361,083.91/102,118.70
  6. Step 6: Final answer
    x = 78,363.33

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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.