Home / 99,654.39-137,528.52-57,215.64

Finding the Fourth Proportional to 99,654.39, 137,528.52 and 57,215.64

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Solution

The fourth proportional to 99,654.39, 137,528.52 and 57,215.64 is: 78,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654.39 : 137,528.52 = 57,215.64 : x
  2. Step 2: Convert to fraction form
    99,654.39/137,528.52 = 57,215.64/x
  3. Step 3: Cross multiply
    99,654.39x = 137,528.52 × 57,215.64
  4. Step 4: Simplify right side
    99,654.39x = 7,868,782,290.05
  5. Step 5: Solve for x
    x = 7,868,782,290.05/99,654.39
  6. Step 6: Final answer
    x = 78,960.72

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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.