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Finding the Fourth Proportional to 136,751.85, 205,219.53 and 48,005.64

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Solution

The fourth proportional to 136,751.85, 205,219.53 and 48,005.64 is: 72,040.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,751.85 : 205,219.53 = 48,005.64 : x
  2. Step 2: Convert to fraction form
    136,751.85/205,219.53 = 48,005.64/x
  3. Step 3: Cross multiply
    136,751.85x = 205,219.53 × 48,005.64
  4. Step 4: Simplify right side
    136,751.85x = 9,851,694,878.15
  5. Step 5: Solve for x
    x = 9,851,694,878.15/136,751.85
  6. Step 6: Final answer
    x = 72,040.67

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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.