Home / 138,210.20-207,315.30-38,370.46

Finding the Fourth Proportional to 138,210.20, 207,315.30 and 38,370.46

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Solution

The fourth proportional to 138,210.20, 207,315.30 and 38,370.46 is: 57,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,210.20 : 207,315.30 = 38,370.46 : x
  2. Step 2: Convert to fraction form
    138,210.20/207,315.30 = 38,370.46/x
  3. Step 3: Cross multiply
    138,210.20x = 207,315.30 × 38,370.46
  4. Step 4: Simplify right side
    138,210.20x = 7,954,783,224.52
  5. Step 5: Solve for x
    x = 7,954,783,224.52/138,210.20
  6. Step 6: Final answer
    x = 57,555.69

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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.