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Finding the Fourth Proportional to 128,792.70, 193,190.40 and 35,298.45

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Solution

The fourth proportional to 128,792.70, 193,190.40 and 35,298.45 is: 52,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,792.70 : 193,190.40 = 35,298.45 : x
  2. Step 2: Convert to fraction form
    128,792.70/193,190.40 = 35,298.45/x
  3. Step 3: Cross multiply
    128,792.70x = 193,190.40 × 35,298.45
  4. Step 4: Simplify right side
    128,792.70x = 6,819,321,674.88
  5. Step 5: Solve for x
    x = 6,819,321,674.88/128,792.70
  6. Step 6: Final answer
    x = 52,948.04

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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.