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Finding the Fourth Proportional to 199,948.84, 275,902.38 and 128,425.84

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Solution

The fourth proportional to 199,948.84, 275,902.38 and 128,425.84 is: 177,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,948.84 : 275,902.38 = 128,425.84 : x
  2. Step 2: Convert to fraction form
    199,948.84/275,902.38 = 128,425.84/x
  3. Step 3: Cross multiply
    199,948.84x = 275,902.38 × 128,425.84
  4. Step 4: Simplify right side
    199,948.84x = 35,432,994,909.50
  5. Step 5: Solve for x
    x = 35,432,994,909.50/199,948.84
  6. Step 6: Final answer
    x = 177,210.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.