Home / 129,701.40-179,027.82-76,003.72

Finding the Fourth Proportional to 129,701.40, 179,027.82 and 76,003.72

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Solution

The fourth proportional to 129,701.40, 179,027.82 and 76,003.72 is: 104,908.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.40 : 179,027.82 = 76,003.72 : x
  2. Step 2: Convert to fraction form
    129,701.40/179,027.82 = 76,003.72/x
  3. Step 3: Cross multiply
    129,701.40x = 179,027.82 × 76,003.72
  4. Step 4: Simplify right side
    129,701.40x = 13,606,779,855.92
  5. Step 5: Solve for x
    x = 13,606,779,855.92/129,701.40
  6. Step 6: Final answer
    x = 104,908.50

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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.