Home / 193,430.11-290,051.85-81,080.16

Finding the Fourth Proportional to 193,430.11, 290,051.85 and 81,080.16

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Solution

The fourth proportional to 193,430.11, 290,051.85 and 81,080.16 is: 121,581.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,430.11 : 290,051.85 = 81,080.16 : x
  2. Step 2: Convert to fraction form
    193,430.11/290,051.85 = 81,080.16/x
  3. Step 3: Cross multiply
    193,430.11x = 290,051.85 × 81,080.16
  4. Step 4: Simplify right side
    193,430.11x = 23,517,451,727.91
  5. Step 5: Solve for x
    x = 23,517,451,727.91/193,430.11
  6. Step 6: Final answer
    x = 121,581.13

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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.