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Finding the Fourth Proportional to 128,854.96, 193,295.66 and 44,615

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Solution

The fourth proportional to 128,854.96, 193,295.66 and 44,615 is: 66,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,854.96 : 193,295.66 = 44,615 : x
  2. Step 2: Convert to fraction form
    128,854.96/193,295.66 = 44,615/x
  3. Step 3: Cross multiply
    128,854.96x = 193,295.66 × 44,615
  4. Step 4: Simplify right side
    128,854.96x = 8,623,885,870.90
  5. Step 5: Solve for x
    x = 8,623,885,870.90/128,854.96
  6. Step 6: Final answer
    x = 66,927.08

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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.