Home / 128,992.73-193,378.82-48,985.90

Finding the Fourth Proportional to 128,992.73, 193,378.82 and 48,985.90

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Solution

The fourth proportional to 128,992.73, 193,378.82 and 48,985.90 is: 73,436.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,992.73 : 193,378.82 = 48,985.90 : x
  2. Step 2: Convert to fraction form
    128,992.73/193,378.82 = 48,985.90/x
  3. Step 3: Cross multiply
    128,992.73x = 193,378.82 × 48,985.90
  4. Step 4: Simplify right side
    128,992.73x = 9,472,834,810.26
  5. Step 5: Solve for x
    x = 9,472,834,810.26/128,992.73
  6. Step 6: Final answer
    x = 73,436.97

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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.