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Finding the Fourth Proportional to 185,804.46, 278,481.51 and 85,756.50

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Solution

The fourth proportional to 185,804.46, 278,481.51 and 85,756.50 is: 128,530.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,804.46 : 278,481.51 = 85,756.50 : x
  2. Step 2: Convert to fraction form
    185,804.46/278,481.51 = 85,756.50/x
  3. Step 3: Cross multiply
    185,804.46x = 278,481.51 × 85,756.50
  4. Step 4: Simplify right side
    185,804.46x = 23,881,599,612.32
  5. Step 5: Solve for x
    x = 23,881,599,612.32/185,804.46
  6. Step 6: Final answer
    x = 128,530.82

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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.