Home / 141,939.42-195,869.78-81,467.50

Finding the Fourth Proportional to 141,939.42, 195,869.78 and 81,467.50

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Solution

The fourth proportional to 141,939.42, 195,869.78 and 81,467.50 is: 112,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,939.42 : 195,869.78 = 81,467.50 : x
  2. Step 2: Convert to fraction form
    141,939.42/195,869.78 = 81,467.50/x
  3. Step 3: Cross multiply
    141,939.42x = 195,869.78 × 81,467.50
  4. Step 4: Simplify right side
    141,939.42x = 15,957,021,302.15
  5. Step 5: Solve for x
    x = 15,957,021,302.15/141,939.42
  6. Step 6: Final answer
    x = 112,421.35

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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.