Home / 99,205.92-136,906.58-56,778.12

Finding the Fourth Proportional to 99,205.92, 136,906.58 and 56,778.12

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Solution

The fourth proportional to 99,205.92, 136,906.58 and 56,778.12 is: 78,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,205.92 : 136,906.58 = 56,778.12 : x
  2. Step 2: Convert to fraction form
    99,205.92/136,906.58 = 56,778.12/x
  3. Step 3: Cross multiply
    99,205.92x = 136,906.58 × 56,778.12
  4. Step 4: Simplify right side
    99,205.92x = 7,773,298,228.03
  5. Step 5: Solve for x
    x = 7,773,298,228.03/99,205.92
  6. Step 6: Final answer
    x = 78,355.19

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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.