Home / 138,654.38-207,434.35-105,017.32

Finding the Fourth Proportional to 138,654.38, 207,434.35 and 105,017.32

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Solution

The fourth proportional to 138,654.38, 207,434.35 and 105,017.32 is: 157,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,654.38 : 207,434.35 = 105,017.32 : x
  2. Step 2: Convert to fraction form
    138,654.38/207,434.35 = 105,017.32/x
  3. Step 3: Cross multiply
    138,654.38x = 207,434.35 × 105,017.32
  4. Step 4: Simplify right side
    138,654.38x = 21,784,199,512.94
  5. Step 5: Solve for x
    x = 21,784,199,512.94/138,654.38
  6. Step 6: Final answer
    x = 157,111.51

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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.