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Finding the Fourth Proportional to 147,751.89, 221,646.99 and 67,770.57

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Solution

The fourth proportional to 147,751.89, 221,646.99 and 67,770.57 is: 101,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,751.89 : 221,646.99 = 67,770.57 : x
  2. Step 2: Convert to fraction form
    147,751.89/221,646.99 = 67,770.57/x
  3. Step 3: Cross multiply
    147,751.89x = 221,646.99 × 67,770.57
  4. Step 4: Simplify right side
    147,751.89x = 15,021,142,851.08
  5. Step 5: Solve for x
    x = 15,021,142,851.08/147,751.89
  6. Step 6: Final answer
    x = 101,664.64

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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.