Home / 185,856.36-278,628.90-129,531.24

Finding the Fourth Proportional to 185,856.36, 278,628.90 and 129,531.24

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Solution

The fourth proportional to 185,856.36, 278,628.90 and 129,531.24 is: 194,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,856.36 : 278,628.90 = 129,531.24 : x
  2. Step 2: Convert to fraction form
    185,856.36/278,628.90 = 129,531.24/x
  3. Step 3: Cross multiply
    185,856.36x = 278,628.90 × 129,531.24
  4. Step 4: Simplify right side
    185,856.36x = 36,091,146,916.84
  5. Step 5: Solve for x
    x = 36,091,146,916.84/185,856.36
  6. Step 6: Final answer
    x = 194,188.39

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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.