Home / 128,788.84-193,150.45-39,996.64

Finding the Fourth Proportional to 128,788.84, 193,150.45 and 39,996.64

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Solution

The fourth proportional to 128,788.84, 193,150.45 and 39,996.64 is: 59,984.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,788.84 : 193,150.45 = 39,996.64 : x
  2. Step 2: Convert to fraction form
    128,788.84/193,150.45 = 39,996.64/x
  3. Step 3: Cross multiply
    128,788.84x = 193,150.45 × 39,996.64
  4. Step 4: Simplify right side
    128,788.84x = 7,725,369,014.49
  5. Step 5: Solve for x
    x = 7,725,369,014.49/128,788.84
  6. Step 6: Final answer
    x = 59,984.77

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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.