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Finding the Fourth Proportional to 95,999.80, 143,999.70 and 86,486.35

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Solution

The fourth proportional to 95,999.80, 143,999.70 and 86,486.35 is: 129,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,999.80 : 143,999.70 = 86,486.35 : x
  2. Step 2: Convert to fraction form
    95,999.80/143,999.70 = 86,486.35/x
  3. Step 3: Cross multiply
    95,999.80x = 143,999.70 × 86,486.35
  4. Step 4: Simplify right side
    95,999.80x = 12,454,008,454.10
  5. Step 5: Solve for x
    x = 12,454,008,454.10/95,999.80
  6. Step 6: Final answer
    x = 129,729.53

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1.5x scale

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.