Home / 193,518.48-290,389.84-81,188.76

Finding the Fourth Proportional to 193,518.48, 290,389.84 and 81,188.76

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Solution

The fourth proportional to 193,518.48, 290,389.84 and 81,188.76 is: 121,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,518.48 : 290,389.84 = 81,188.76 : x
  2. Step 2: Convert to fraction form
    193,518.48/290,389.84 = 81,188.76/x
  3. Step 3: Cross multiply
    193,518.48x = 290,389.84 × 81,188.76
  4. Step 4: Simplify right side
    193,518.48x = 23,576,391,026.20
  5. Step 5: Solve for x
    x = 23,576,391,026.20/193,518.48
  6. Step 6: Final answer
    x = 121,830.18

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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.