Home / 138,410.05-207,615.21-38,570.53

Finding the Fourth Proportional to 138,410.05, 207,615.21 and 38,570.53

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Solution

The fourth proportional to 138,410.05, 207,615.21 and 38,570.53 is: 57,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,410.05 : 207,615.21 = 38,570.53 : x
  2. Step 2: Convert to fraction form
    138,410.05/207,615.21 = 38,570.53/x
  3. Step 3: Cross multiply
    138,410.05x = 207,615.21 × 38,570.53
  4. Step 4: Simplify right side
    138,410.05x = 8,007,828,685.76
  5. Step 5: Solve for x
    x = 8,007,828,685.76/138,410.05
  6. Step 6: Final answer
    x = 57,855.83

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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.