Home / 138,111.36-207,166.45-38,271.25

Finding the Fourth Proportional to 138,111.36, 207,166.45 and 38,271.25

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Solution

The fourth proportional to 138,111.36, 207,166.45 and 38,271.25 is: 57,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,111.36 : 207,166.45 = 38,271.25 : x
  2. Step 2: Convert to fraction form
    138,111.36/207,166.45 = 38,271.25/x
  3. Step 3: Cross multiply
    138,111.36x = 207,166.45 × 38,271.25
  4. Step 4: Simplify right side
    138,111.36x = 7,928,518,999.56
  5. Step 5: Solve for x
    x = 7,928,518,999.56/138,111.36
  6. Step 6: Final answer
    x = 57,406.71

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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.