Home / 138,039.63-207,064.05-38,191.47

Finding the Fourth Proportional to 138,039.63, 207,064.05 and 38,191.47

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Solution

The fourth proportional to 138,039.63, 207,064.05 and 38,191.47 is: 57,288.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.63 : 207,064.05 = 38,191.47 : x
  2. Step 2: Convert to fraction form
    138,039.63/207,064.05 = 38,191.47/x
  3. Step 3: Cross multiply
    138,039.63x = 207,064.05 × 38,191.47
  4. Step 4: Simplify right side
    138,039.63x = 7,908,080,453.65
  5. Step 5: Solve for x
    x = 7,908,080,453.65/138,039.63
  6. Step 6: Final answer
    x = 57,288.48

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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.