Home / 128,929.75-193,394.45-48,967.56

Finding the Fourth Proportional to 128,929.75, 193,394.45 and 48,967.56

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Solution

The fourth proportional to 128,929.75, 193,394.45 and 48,967.56 is: 73,451.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,929.75 : 193,394.45 = 48,967.56 : x
  2. Step 2: Convert to fraction form
    128,929.75/193,394.45 = 48,967.56/x
  3. Step 3: Cross multiply
    128,929.75x = 193,394.45 × 48,967.56
  4. Step 4: Simplify right side
    128,929.75x = 9,470,054,817.53
  5. Step 5: Solve for x
    x = 9,470,054,817.53/128,929.75
  6. Step 6: Final answer
    x = 73,451.28

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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.