Home / 136,577.56-188,478.44-79,220.74

Finding the Fourth Proportional to 136,577.56, 188,478.44 and 79,220.74

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Solution

The fourth proportional to 136,577.56, 188,478.44 and 79,220.74 is: 109,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,577.56 : 188,478.44 = 79,220.74 : x
  2. Step 2: Convert to fraction form
    136,577.56/188,478.44 = 79,220.74/x
  3. Step 3: Cross multiply
    136,577.56x = 188,478.44 × 79,220.74
  4. Step 4: Simplify right side
    136,577.56x = 14,931,401,490.85
  5. Step 5: Solve for x
    x = 14,931,401,490.85/136,577.56
  6. Step 6: Final answer
    x = 109,325.44

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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.