Home / 131,113.70-180,890.25-77,371.82

Finding the Fourth Proportional to 131,113.70, 180,890.25 and 77,371.82

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Solution

The fourth proportional to 131,113.70, 180,890.25 and 77,371.82 is: 106,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,113.70 : 180,890.25 = 77,371.82 : x
  2. Step 2: Convert to fraction form
    131,113.70/180,890.25 = 77,371.82/x
  3. Step 3: Cross multiply
    131,113.70x = 180,890.25 × 77,371.82
  4. Step 4: Simplify right side
    131,113.70x = 13,995,807,862.76
  5. Step 5: Solve for x
    x = 13,995,807,862.76/131,113.70
  6. Step 6: Final answer
    x = 106,745.58

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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.