Home / 136,179.22-187,914.12-78,807.15

Finding the Fourth Proportional to 136,179.22, 187,914.12 and 78,807.15

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Solution

The fourth proportional to 136,179.22, 187,914.12 and 78,807.15 is: 108,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,179.22 : 187,914.12 = 78,807.15 : x
  2. Step 2: Convert to fraction form
    136,179.22/187,914.12 = 78,807.15/x
  3. Step 3: Cross multiply
    136,179.22x = 187,914.12 × 78,807.15
  4. Step 4: Simplify right side
    136,179.22x = 14,808,976,241.96
  5. Step 5: Solve for x
    x = 14,808,976,241.96/136,179.22
  6. Step 6: Final answer
    x = 108,746.23

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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.