Home / 138,239.08-207,235.14-53,979.64

Finding the Fourth Proportional to 138,239.08, 207,235.14 and 53,979.64

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Solution

The fourth proportional to 138,239.08, 207,235.14 and 53,979.64 is: 80,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,239.08 : 207,235.14 = 53,979.64 : x
  2. Step 2: Convert to fraction form
    138,239.08/207,235.14 = 53,979.64/x
  3. Step 3: Cross multiply
    138,239.08x = 207,235.14 × 53,979.64
  4. Step 4: Simplify right side
    138,239.08x = 11,186,478,252.55
  5. Step 5: Solve for x
    x = 11,186,478,252.55/138,239.08
  6. Step 6: Final answer
    x = 80,921.24

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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.