Home / 103,858.16-143,279.33-65,591.12

Finding the Fourth Proportional to 103,858.16, 143,279.33 and 65,591.12

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Solution

The fourth proportional to 103,858.16, 143,279.33 and 65,591.12 is: 90,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,858.16 : 143,279.33 = 65,591.12 : x
  2. Step 2: Convert to fraction form
    103,858.16/143,279.33 = 65,591.12/x
  3. Step 3: Cross multiply
    103,858.16x = 143,279.33 × 65,591.12
  4. Step 4: Simplify right side
    103,858.16x = 9,397,850,683.20
  5. Step 5: Solve for x
    x = 9,397,850,683.20/103,858.16
  6. Step 6: Final answer
    x = 90,487.36

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1.5x scale

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.