Home / 138,371.76-207,588.69-42,317.37

Finding the Fourth Proportional to 138,371.76, 207,588.69 and 42,317.37

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Solution

The fourth proportional to 138,371.76, 207,588.69 and 42,317.37 is: 63,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,371.76 : 207,588.69 = 42,317.37 : x
  2. Step 2: Convert to fraction form
    138,371.76/207,588.69 = 42,317.37/x
  3. Step 3: Cross multiply
    138,371.76x = 207,588.69 × 42,317.37
  4. Step 4: Simplify right side
    138,371.76x = 8,784,607,402.55
  5. Step 5: Solve for x
    x = 8,784,607,402.55/138,371.76
  6. Step 6: Final answer
    x = 63,485.55

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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.