Home / 141,871.28-195,783.68-78,211.36

Finding the Fourth Proportional to 141,871.28, 195,783.68 and 78,211.36

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Solution

The fourth proportional to 141,871.28, 195,783.68 and 78,211.36 is: 107,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,871.28 : 195,783.68 = 78,211.36 : x
  2. Step 2: Convert to fraction form
    141,871.28/195,783.68 = 78,211.36/x
  3. Step 3: Cross multiply
    141,871.28x = 195,783.68 × 78,211.36
  4. Step 4: Simplify right side
    141,871.28x = 15,312,507,878.60
  5. Step 5: Solve for x
    x = 15,312,507,878.60/141,871.28
  6. Step 6: Final answer
    x = 107,932.40

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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.