Home / 129,779.31-179,102.24-76,081.58

Finding the Fourth Proportional to 129,779.31, 179,102.24 and 76,081.58

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Solution

The fourth proportional to 129,779.31, 179,102.24 and 76,081.58 is: 104,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,779.31 : 179,102.24 = 76,081.58 : x
  2. Step 2: Convert to fraction form
    129,779.31/179,102.24 = 76,081.58/x
  3. Step 3: Cross multiply
    129,779.31x = 179,102.24 × 76,081.58
  4. Step 4: Simplify right side
    129,779.31x = 13,626,381,081.76
  5. Step 5: Solve for x
    x = 13,626,381,081.76/129,779.31
  6. Step 6: Final answer
    x = 104,996.56

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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.