Home / 202,436.74-279,100.65-138,660.58

Finding the Fourth Proportional to 202,436.74, 279,100.65 and 138,660.58

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Solution

The fourth proportional to 202,436.74, 279,100.65 and 138,660.58 is: 191,172.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,436.74 : 279,100.65 = 138,660.58 : x
  2. Step 2: Convert to fraction form
    202,436.74/279,100.65 = 138,660.58/x
  3. Step 3: Cross multiply
    202,436.74x = 279,100.65 × 138,660.58
  4. Step 4: Simplify right side
    202,436.74x = 38,700,258,007.38
  5. Step 5: Solve for x
    x = 38,700,258,007.38/202,436.74
  6. Step 6: Final answer
    x = 191,172.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.