Home / 125,155.35-187,734.21-30,386.37

Finding the Fourth Proportional to 125,155.35, 187,734.21 and 30,386.37

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Solution

The fourth proportional to 125,155.35, 187,734.21 and 30,386.37 is: 45,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,155.35 : 187,734.21 = 30,386.37 : x
  2. Step 2: Convert to fraction form
    125,155.35/187,734.21 = 30,386.37/x
  3. Step 3: Cross multiply
    125,155.35x = 187,734.21 × 30,386.37
  4. Step 4: Simplify right side
    125,155.35x = 5,704,561,756.77
  5. Step 5: Solve for x
    x = 5,704,561,756.77/125,155.35
  6. Step 6: Final answer
    x = 45,579.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.