Home / 185,289.30-255,699.45-100,405.62

Finding the Fourth Proportional to 185,289.30, 255,699.45 and 100,405.62

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Solution

The fourth proportional to 185,289.30, 255,699.45 and 100,405.62 is: 138,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,289.30 : 255,699.45 = 100,405.62 : x
  2. Step 2: Convert to fraction form
    185,289.30/255,699.45 = 100,405.62/x
  3. Step 3: Cross multiply
    185,289.30x = 255,699.45 × 100,405.62
  4. Step 4: Simplify right side
    185,289.30x = 25,673,661,810.91
  5. Step 5: Solve for x
    x = 25,673,661,810.91/185,289.30
  6. Step 6: Final answer
    x = 138,559.87

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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.