Home / 136,733.78-188,692.24-76,303.78

Finding the Fourth Proportional to 136,733.78, 188,692.24 and 76,303.78

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Solution

The fourth proportional to 136,733.78, 188,692.24 and 76,303.78 is: 105,299.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,733.78 : 188,692.24 = 76,303.78 : x
  2. Step 2: Convert to fraction form
    136,733.78/188,692.24 = 76,303.78/x
  3. Step 3: Cross multiply
    136,733.78x = 188,692.24 × 76,303.78
  4. Step 4: Simplify right side
    136,733.78x = 14,397,931,168.67
  5. Step 5: Solve for x
    x = 14,397,931,168.67/136,733.78
  6. Step 6: Final answer
    x = 105,299.01

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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.