Home / 185,718.80-278,189.40-102,515.60

Finding the Fourth Proportional to 185,718.80, 278,189.40 and 102,515.60

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Solution

The fourth proportional to 185,718.80, 278,189.40 and 102,515.60 is: 153,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,718.80 : 278,189.40 = 102,515.60 : x
  2. Step 2: Convert to fraction form
    185,718.80/278,189.40 = 102,515.60/x
  3. Step 3: Cross multiply
    185,718.80x = 278,189.40 × 102,515.60
  4. Step 4: Simplify right side
    185,718.80x = 28,518,753,254.64
  5. Step 5: Solve for x
    x = 28,518,753,254.64/185,718.80
  6. Step 6: Final answer
    x = 153,558.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.