Home / 186,723.12-280,100.49-81,615.90

Finding the Fourth Proportional to 186,723.12, 280,100.49 and 81,615.90

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Solution

The fourth proportional to 186,723.12, 280,100.49 and 81,615.90 is: 122,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,723.12 : 280,100.49 = 81,615.90 : x
  2. Step 2: Convert to fraction form
    186,723.12/280,100.49 = 81,615.90/x
  3. Step 3: Cross multiply
    186,723.12x = 280,100.49 × 81,615.90
  4. Step 4: Simplify right side
    186,723.12x = 22,860,653,581.79
  5. Step 5: Solve for x
    x = 22,860,653,581.79/186,723.12
  6. Step 6: Final answer
    x = 122,430.76

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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.