Home / 185,642.19-278,418.68-85,706.37

Finding the Fourth Proportional to 185,642.19, 278,418.68 and 85,706.37

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Solution

The fourth proportional to 185,642.19, 278,418.68 and 85,706.37 is: 128,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,642.19 : 278,418.68 = 85,706.37 : x
  2. Step 2: Convert to fraction form
    185,642.19/278,418.68 = 85,706.37/x
  3. Step 3: Cross multiply
    185,642.19x = 278,418.68 × 85,706.37
  4. Step 4: Simplify right side
    185,642.19x = 23,862,254,402.99
  5. Step 5: Solve for x
    x = 23,862,254,402.99/185,642.19
  6. Step 6: Final answer
    x = 128,538.96

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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.