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Finding the Fourth Proportional to 95,871.60, 143,807.40 and 81,109.35

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Solution

The fourth proportional to 95,871.60, 143,807.40 and 81,109.35 is: 121,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,871.60 : 143,807.40 = 81,109.35 : x
  2. Step 2: Convert to fraction form
    95,871.60/143,807.40 = 81,109.35/x
  3. Step 3: Cross multiply
    95,871.60x = 143,807.40 × 81,109.35
  4. Step 4: Simplify right side
    95,871.60x = 11,664,124,739.19
  5. Step 5: Solve for x
    x = 11,664,124,739.19/95,871.60
  6. Step 6: Final answer
    x = 121,664.03

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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.