Home / 99,210.96-136,909.68-53,889.56

Finding the Fourth Proportional to 99,210.96, 136,909.68 and 53,889.56

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Solution

The fourth proportional to 99,210.96, 136,909.68 and 53,889.56 is: 74,366.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,210.96 : 136,909.68 = 53,889.56 : x
  2. Step 2: Convert to fraction form
    99,210.96/136,909.68 = 53,889.56/x
  3. Step 3: Cross multiply
    99,210.96x = 136,909.68 × 53,889.56
  4. Step 4: Simplify right side
    99,210.96x = 7,378,002,414.94
  5. Step 5: Solve for x
    x = 7,378,002,414.94/99,210.96
  6. Step 6: Final answer
    x = 74,366.81

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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.