Home / 138,100.23-207,154.80-38,261.39

Finding the Fourth Proportional to 138,100.23, 207,154.80 and 38,261.39

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Solution

The fourth proportional to 138,100.23, 207,154.80 and 38,261.39 is: 57,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,100.23 : 207,154.80 = 38,261.39 : x
  2. Step 2: Convert to fraction form
    138,100.23/207,154.80 = 38,261.39/x
  3. Step 3: Cross multiply
    138,100.23x = 207,154.80 × 38,261.39
  4. Step 4: Simplify right side
    138,100.23x = 7,926,029,557.40
  5. Step 5: Solve for x
    x = 7,926,029,557.40/138,100.23
  6. Step 6: Final answer
    x = 57,393.31

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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.