Home / 99,078.12-136,734.60-56,057.68

Finding the Fourth Proportional to 99,078.12, 136,734.60 and 56,057.68

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Solution

The fourth proportional to 99,078.12, 136,734.60 and 56,057.68 is: 77,363.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,078.12 : 136,734.60 = 56,057.68 : x
  2. Step 2: Convert to fraction form
    99,078.12/136,734.60 = 56,057.68/x
  3. Step 3: Cross multiply
    99,078.12x = 136,734.60 × 56,057.68
  4. Step 4: Simplify right side
    99,078.12x = 7,665,024,451.73
  5. Step 5: Solve for x
    x = 7,665,024,451.73/99,078.12
  6. Step 6: Final answer
    x = 77,363.44

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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.