Home / 138,208.28-207,312.31-38,368.43

Finding the Fourth Proportional to 138,208.28, 207,312.31 and 38,368.43

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Solution

The fourth proportional to 138,208.28, 207,312.31 and 38,368.43 is: 57,552.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,208.28 : 207,312.31 = 38,368.43 : x
  2. Step 2: Convert to fraction form
    138,208.28/207,312.31 = 38,368.43/x
  3. Step 3: Cross multiply
    138,208.28x = 207,312.31 × 38,368.43
  4. Step 4: Simplify right side
    138,208.28x = 7,954,248,809.33
  5. Step 5: Solve for x
    x = 7,954,248,809.33/138,208.28
  6. Step 6: Final answer
    x = 57,552.62

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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.