Home / 141,899.72-195,822.96-78,239.84

Finding the Fourth Proportional to 141,899.72, 195,822.96 and 78,239.84

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Solution

The fourth proportional to 141,899.72, 195,822.96 and 78,239.84 is: 107,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,899.72 : 195,822.96 = 78,239.84 : x
  2. Step 2: Convert to fraction form
    141,899.72/195,822.96 = 78,239.84/x
  3. Step 3: Cross multiply
    141,899.72x = 195,822.96 × 78,239.84
  4. Step 4: Simplify right side
    141,899.72x = 15,321,157,058.73
  5. Step 5: Solve for x
    x = 15,321,157,058.73/141,899.72
  6. Step 6: Final answer
    x = 107,971.72

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1.5x scale

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.