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Finding the Fourth Proportional to 136,793.94, 205,417.86 and 84,535.56

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Solution

The fourth proportional to 136,793.94, 205,417.86 and 84,535.56 is: 126,943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,793.94 : 205,417.86 = 84,535.56 : x
  2. Step 2: Convert to fraction form
    136,793.94/205,417.86 = 84,535.56/x
  3. Step 3: Cross multiply
    136,793.94x = 205,417.86 × 84,535.56
  4. Step 4: Simplify right side
    136,793.94x = 17,365,113,829.10
  5. Step 5: Solve for x
    x = 17,365,113,829.10/136,793.94
  6. Step 6: Final answer
    x = 126,943.59

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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.