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Finding the Fourth Proportional to 136,775.62, 188,752.38 and 76,350.84

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Solution

The fourth proportional to 136,775.62, 188,752.38 and 76,350.84 is: 105,365.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,775.62 : 188,752.38 = 76,350.84 : x
  2. Step 2: Convert to fraction form
    136,775.62/188,752.38 = 76,350.84/x
  3. Step 3: Cross multiply
    136,775.62x = 188,752.38 × 76,350.84
  4. Step 4: Simplify right side
    136,775.62x = 14,411,401,770.86
  5. Step 5: Solve for x
    x = 14,411,401,770.86/136,775.62
  6. Step 6: Final answer
    x = 105,365.28

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1.5x scale

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.