Home / 137,544.04-189,872.96-86,631.60

Finding the Fourth Proportional to 137,544.04, 189,872.96 and 86,631.60

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Solution

The fourth proportional to 137,544.04, 189,872.96 and 86,631.60 is: 119,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,544.04 : 189,872.96 = 86,631.60 : x
  2. Step 2: Convert to fraction form
    137,544.04/189,872.96 = 86,631.60/x
  3. Step 3: Cross multiply
    137,544.04x = 189,872.96 × 86,631.60
  4. Step 4: Simplify right side
    137,544.04x = 16,448,998,321.54
  5. Step 5: Solve for x
    x = 16,448,998,321.54/137,544.04
  6. Step 6: Final answer
    x = 119,590.77

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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.