Home / 141,871.36-195,783.20-78,207.84

Finding the Fourth Proportional to 141,871.36, 195,783.20 and 78,207.84

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Solution

The fourth proportional to 141,871.36, 195,783.20 and 78,207.84 is: 107,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,871.36 : 195,783.20 = 78,207.84 : x
  2. Step 2: Convert to fraction form
    141,871.36/195,783.20 = 78,207.84/x
  3. Step 3: Cross multiply
    141,871.36x = 195,783.20 × 78,207.84
  4. Step 4: Simplify right side
    141,871.36x = 15,311,781,180.29
  5. Step 5: Solve for x
    x = 15,311,781,180.29/141,871.36
  6. Step 6: Final answer
    x = 107,927.22

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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.