Home / 185,639.10-278,458.65-133,539.90

Finding the Fourth Proportional to 185,639.10, 278,458.65 and 133,539.90

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Solution

The fourth proportional to 185,639.10, 278,458.65 and 133,539.90 is: 200,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,639.10 : 278,458.65 = 133,539.90 : x
  2. Step 2: Convert to fraction form
    185,639.10/278,458.65 = 133,539.90/x
  3. Step 3: Cross multiply
    185,639.10x = 278,458.65 × 133,539.90
  4. Step 4: Simplify right side
    185,639.10x = 37,185,340,275.14
  5. Step 5: Solve for x
    x = 37,185,340,275.14/185,639.10
  6. Step 6: Final answer
    x = 200,309.85

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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.