Home / 128,795.96-193,249.55-69,673.25

Finding the Fourth Proportional to 128,795.96, 193,249.55 and 69,673.25

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Solution

The fourth proportional to 128,795.96, 193,249.55 and 69,673.25 is: 104,539.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,795.96 : 193,249.55 = 69,673.25 : x
  2. Step 2: Convert to fraction form
    128,795.96/193,249.55 = 69,673.25/x
  3. Step 3: Cross multiply
    128,795.96x = 193,249.55 × 69,673.25
  4. Step 4: Simplify right side
    128,795.96x = 13,464,323,417.47
  5. Step 5: Solve for x
    x = 13,464,323,417.47/128,795.96
  6. Step 6: Final answer
    x = 104,539.96

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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.