Home / 99,653.85-137,528.43-57,218.76

Finding the Fourth Proportional to 99,653.85, 137,528.43 and 57,218.76

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Solution

The fourth proportional to 99,653.85, 137,528.43 and 57,218.76 is: 78,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,653.85 : 137,528.43 = 57,218.76 : x
  2. Step 2: Convert to fraction form
    99,653.85/137,528.43 = 57,218.76/x
  3. Step 3: Cross multiply
    99,653.85x = 137,528.43 × 57,218.76
  4. Step 4: Simplify right side
    99,653.85x = 7,869,206,229.35
  5. Step 5: Solve for x
    x = 7,869,206,229.35/99,653.85
  6. Step 6: Final answer
    x = 78,965.40

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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.