Home / 113,861.85-157,117.41-66,105.87

Finding the Fourth Proportional to 113,861.85, 157,117.41 and 66,105.87

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Solution

The fourth proportional to 113,861.85, 157,117.41 and 66,105.87 is: 91,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,861.85 : 157,117.41 = 66,105.87 : x
  2. Step 2: Convert to fraction form
    113,861.85/157,117.41 = 66,105.87/x
  3. Step 3: Cross multiply
    113,861.85x = 157,117.41 × 66,105.87
  4. Step 4: Simplify right side
    113,861.85x = 10,386,383,080.20
  5. Step 5: Solve for x
    x = 10,386,383,080.20/113,861.85
  6. Step 6: Final answer
    x = 91,219.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.