Home / 145,124.20-217,478.62-82,665.64

Finding the Fourth Proportional to 145,124.20, 217,478.62 and 82,665.64

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Solution

The fourth proportional to 145,124.20, 217,478.62 and 82,665.64 is: 123,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,124.20 : 217,478.62 = 82,665.64 : x
  2. Step 2: Convert to fraction form
    145,124.20/217,478.62 = 82,665.64/x
  3. Step 3: Cross multiply
    145,124.20x = 217,478.62 × 82,665.64
  4. Step 4: Simplify right side
    145,124.20x = 17,978,009,308.62
  5. Step 5: Solve for x
    x = 17,978,009,308.62/145,124.20
  6. Step 6: Final answer
    x = 123,880.16

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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.