Home / 129,558.90-193,857.21-113,689.74

Finding the Fourth Proportional to 129,558.90, 193,857.21 and 113,689.74

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Solution

The fourth proportional to 129,558.90, 193,857.21 and 113,689.74 is: 170,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,558.90 : 193,857.21 = 113,689.74 : x
  2. Step 2: Convert to fraction form
    129,558.90/193,857.21 = 113,689.74/x
  3. Step 3: Cross multiply
    129,558.90x = 193,857.21 × 113,689.74
  4. Step 4: Simplify right side
    129,558.90x = 22,039,575,802.03
  5. Step 5: Solve for x
    x = 22,039,575,802.03/129,558.90
  6. Step 6: Final answer
    x = 170,112.40

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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.