Home / 138,038.31-207,062.09-38,190.15

Finding the Fourth Proportional to 138,038.31, 207,062.09 and 38,190.15

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Solution

The fourth proportional to 138,038.31, 207,062.09 and 38,190.15 is: 57,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,038.31 : 207,062.09 = 38,190.15 : x
  2. Step 2: Convert to fraction form
    138,038.31/207,062.09 = 38,190.15/x
  3. Step 3: Cross multiply
    138,038.31x = 207,062.09 × 38,190.15
  4. Step 4: Simplify right side
    138,038.31x = 7,907,732,228.68
  5. Step 5: Solve for x
    x = 7,907,732,228.68/138,038.31
  6. Step 6: Final answer
    x = 57,286.50

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1.5x scale

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.