Home / 128,747.67-193,084.59-38,799.09

Finding the Fourth Proportional to 128,747.67, 193,084.59 and 38,799.09

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Solution

The fourth proportional to 128,747.67, 193,084.59 and 38,799.09 is: 58,187.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,747.67 : 193,084.59 = 38,799.09 : x
  2. Step 2: Convert to fraction form
    128,747.67/193,084.59 = 38,799.09/x
  3. Step 3: Cross multiply
    128,747.67x = 193,084.59 × 38,799.09
  4. Step 4: Simplify right side
    128,747.67x = 7,491,506,385.02
  5. Step 5: Solve for x
    x = 7,491,506,385.02/128,747.67
  6. Step 6: Final answer
    x = 58,187.51

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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.