Home / 102,100.85-140,879.00-61,818.34

Finding the Fourth Proportional to 102,100.85, 140,879.00 and 61,818.34

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Solution

The fourth proportional to 102,100.85, 140,879.00 and 61,818.34 is: 85,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,100.85 : 140,879.00 = 61,818.34 : x
  2. Step 2: Convert to fraction form
    102,100.85/140,879.00 = 61,818.34/x
  3. Step 3: Cross multiply
    102,100.85x = 140,879.00 × 61,818.34
  4. Step 4: Simplify right side
    102,100.85x = 8,708,905,639.63
  5. Step 5: Solve for x
    x = 8,708,905,639.63/102,100.85
  6. Step 6: Final answer
    x = 85,297.09

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1.5x scale

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.