Home / 143,779.89-198,397.85-83,342.19

Finding the Fourth Proportional to 143,779.89, 198,397.85 and 83,342.19

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Solution

The fourth proportional to 143,779.89, 198,397.85 and 83,342.19 is: 115,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,779.89 : 198,397.85 = 83,342.19 : x
  2. Step 2: Convert to fraction form
    143,779.89/198,397.85 = 83,342.19/x
  3. Step 3: Cross multiply
    143,779.89x = 198,397.85 × 83,342.19
  4. Step 4: Simplify right side
    143,779.89x = 16,534,910,893.58
  5. Step 5: Solve for x
    x = 16,534,910,893.58/143,779.89
  6. Step 6: Final answer
    x = 115,001.55

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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.