Home / 128,941.48-193,321.50-49,989.16

Finding the Fourth Proportional to 128,941.48, 193,321.50 and 49,989.16

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Solution

The fourth proportional to 128,941.48, 193,321.50 and 49,989.16 is: 74,948.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,941.48 : 193,321.50 = 49,989.16 : x
  2. Step 2: Convert to fraction form
    128,941.48/193,321.50 = 49,989.16/x
  3. Step 3: Cross multiply
    128,941.48x = 193,321.50 × 49,989.16
  4. Step 4: Simplify right side
    128,941.48x = 9,663,979,394.94
  5. Step 5: Solve for x
    x = 9,663,979,394.94/128,941.48
  6. Step 6: Final answer
    x = 74,948.57

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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.