Home / 99,125.28-136,789.20-56,682.72

Finding the Fourth Proportional to 99,125.28, 136,789.20 and 56,682.72

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Solution

The fourth proportional to 99,125.28, 136,789.20 and 56,682.72 is: 78,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,125.28 : 136,789.20 = 56,682.72 : x
  2. Step 2: Convert to fraction form
    99,125.28/136,789.20 = 56,682.72/x
  3. Step 3: Cross multiply
    99,125.28x = 136,789.20 × 56,682.72
  4. Step 4: Simplify right side
    99,125.28x = 7,753,583,922.62
  5. Step 5: Solve for x
    x = 7,753,583,922.62/99,125.28
  6. Step 6: Final answer
    x = 78,220.05

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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.