Home / 141,779.30-195,656.11-78,116.94

Finding the Fourth Proportional to 141,779.30, 195,656.11 and 78,116.94

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Solution

The fourth proportional to 141,779.30, 195,656.11 and 78,116.94 is: 107,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,779.30 : 195,656.11 = 78,116.94 : x
  2. Step 2: Convert to fraction form
    141,779.30/195,656.11 = 78,116.94/x
  3. Step 3: Cross multiply
    141,779.30x = 195,656.11 × 78,116.94
  4. Step 4: Simplify right side
    141,779.30x = 15,284,056,410.21
  5. Step 5: Solve for x
    x = 15,284,056,410.21/141,779.30
  6. Step 6: Final answer
    x = 107,801.75

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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.