Home / 138,465.05-207,699.22-38,619.18

Finding the Fourth Proportional to 138,465.05, 207,699.22 and 38,619.18

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Solution

The fourth proportional to 138,465.05, 207,699.22 and 38,619.18 is: 57,929.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.05 : 207,699.22 = 38,619.18 : x
  2. Step 2: Convert to fraction form
    138,465.05/207,699.22 = 38,619.18/x
  3. Step 3: Cross multiply
    138,465.05x = 207,699.22 × 38,619.18
  4. Step 4: Simplify right side
    138,465.05x = 8,021,173,611.31
  5. Step 5: Solve for x
    x = 8,021,173,611.31/138,465.05
  6. Step 6: Final answer
    x = 57,929.23

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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.