Home / 138,394.86-190,985.49-77,966.24

Finding the Fourth Proportional to 138,394.86, 190,985.49 and 77,966.24

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Solution

The fourth proportional to 138,394.86, 190,985.49 and 77,966.24 is: 107,593.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,394.86 : 190,985.49 = 77,966.24 : x
  2. Step 2: Convert to fraction form
    138,394.86/190,985.49 = 77,966.24/x
  3. Step 3: Cross multiply
    138,394.86x = 190,985.49 × 77,966.24
  4. Step 4: Simplify right side
    138,394.86x = 14,890,419,594.93
  5. Step 5: Solve for x
    x = 14,890,419,594.93/138,394.86
  6. Step 6: Final answer
    x = 107,593.73

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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.