Home / 138,320.51-207,533.04-54,140.83

Finding the Fourth Proportional to 138,320.51, 207,533.04 and 54,140.83

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Solution

The fourth proportional to 138,320.51, 207,533.04 and 54,140.83 is: 81,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,320.51 : 207,533.04 = 54,140.83 : x
  2. Step 2: Convert to fraction form
    138,320.51/207,533.04 = 54,140.83/x
  3. Step 3: Cross multiply
    138,320.51x = 207,533.04 × 54,140.83
  4. Step 4: Simplify right side
    138,320.51x = 11,236,011,356.66
  5. Step 5: Solve for x
    x = 11,236,011,356.66/138,320.51
  6. Step 6: Final answer
    x = 81,231.71

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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.