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Finding the Fourth Proportional to 185,271.65, 255,675.31 and 100,388.71

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Solution

The fourth proportional to 185,271.65, 255,675.31 and 100,388.71 is: 138,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,271.65 : 255,675.31 = 100,388.71 : x
  2. Step 2: Convert to fraction form
    185,271.65/255,675.31 = 100,388.71/x
  3. Step 3: Cross multiply
    185,271.65x = 255,675.31 × 100,388.71
  4. Step 4: Simplify right side
    185,271.65x = 25,666,913,659.59
  5. Step 5: Solve for x
    x = 25,666,913,659.59/185,271.65
  6. Step 6: Final answer
    x = 138,536.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.