Home / 145,127.20-217,483.12-82,668.64

Finding the Fourth Proportional to 145,127.20, 217,483.12 and 82,668.64

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Solution

The fourth proportional to 145,127.20, 217,483.12 and 82,668.64 is: 123,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,127.20 : 217,483.12 = 82,668.64 : x
  2. Step 2: Convert to fraction form
    145,127.20/217,483.12 = 82,668.64/x
  3. Step 3: Cross multiply
    145,127.20x = 217,483.12 × 82,668.64
  4. Step 4: Simplify right side
    145,127.20x = 17,979,033,753.36
  5. Step 5: Solve for x
    x = 17,979,033,753.36/145,127.20
  6. Step 6: Final answer
    x = 123,884.66

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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.