Home / 129,615.08-193,960.67-89,642.16

Finding the Fourth Proportional to 129,615.08, 193,960.67 and 89,642.16

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Solution

The fourth proportional to 129,615.08, 193,960.67 and 89,642.16 is: 134,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615.08 : 193,960.67 = 89,642.16 : x
  2. Step 2: Convert to fraction form
    129,615.08/193,960.67 = 89,642.16/x
  3. Step 3: Cross multiply
    129,615.08x = 193,960.67 × 89,642.16
  4. Step 4: Simplify right side
    129,615.08x = 17,387,052,965.64
  5. Step 5: Solve for x
    x = 17,387,052,965.64/129,615.08
  6. Step 6: Final answer
    x = 134,143.76

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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.