Home / 102,005.10-140,452.11-84,800.70

Finding the Fourth Proportional to 102,005.10, 140,452.11 and 84,800.70

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Solution

The fourth proportional to 102,005.10, 140,452.11 and 84,800.70 is: 116,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,005.10 : 140,452.11 = 84,800.70 : x
  2. Step 2: Convert to fraction form
    102,005.10/140,452.11 = 84,800.70/x
  3. Step 3: Cross multiply
    102,005.10x = 140,452.11 × 84,800.70
  4. Step 4: Simplify right side
    102,005.10x = 11,910,437,244.48
  5. Step 5: Solve for x
    x = 11,910,437,244.48/102,005.10
  6. Step 6: Final answer
    x = 116,763.15

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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.