Home / 141,938.72-195,884.40-78,276.64

Finding the Fourth Proportional to 141,938.72, 195,884.40 and 78,276.64

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Solution

The fourth proportional to 141,938.72, 195,884.40 and 78,276.64 is: 108,026.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,938.72 : 195,884.40 = 78,276.64 : x
  2. Step 2: Convert to fraction form
    141,938.72/195,884.40 = 78,276.64/x
  3. Step 3: Cross multiply
    141,938.72x = 195,884.40 × 78,276.64
  4. Step 4: Simplify right side
    141,938.72x = 15,333,172,660.42
  5. Step 5: Solve for x
    x = 15,333,172,660.42/141,938.72
  6. Step 6: Final answer
    x = 108,026.71

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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.