Home / 99,824.19-137,760.39-56,809.85

Finding the Fourth Proportional to 99,824.19, 137,760.39 and 56,809.85

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Solution

The fourth proportional to 99,824.19, 137,760.39 and 56,809.85 is: 78,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,824.19 : 137,760.39 = 56,809.85 : x
  2. Step 2: Convert to fraction form
    99,824.19/137,760.39 = 56,809.85/x
  3. Step 3: Cross multiply
    99,824.19x = 137,760.39 × 56,809.85
  4. Step 4: Simplify right side
    99,824.19x = 7,826,146,403.04
  5. Step 5: Solve for x
    x = 7,826,146,403.04/99,824.19
  6. Step 6: Final answer
    x = 78,399.30

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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.