Home / 128,428.50-192,560.73-61,735.93

Finding the Fourth Proportional to 128,428.50, 192,560.73 and 61,735.93

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Solution

The fourth proportional to 128,428.50, 192,560.73 and 61,735.93 is: 92,564.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,428.50 : 192,560.73 = 61,735.93 : x
  2. Step 2: Convert to fraction form
    128,428.50/192,560.73 = 61,735.93/x
  3. Step 3: Cross multiply
    128,428.50x = 192,560.73 × 61,735.93
  4. Step 4: Simplify right side
    128,428.50x = 11,887,915,748.03
  5. Step 5: Solve for x
    x = 11,887,915,748.03/128,428.50
  6. Step 6: Final answer
    x = 92,564.47

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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.