Home / 123,487.67-170,420.86-75,734.53

Finding the Fourth Proportional to 123,487.67, 170,420.86 and 75,734.53

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Solution

The fourth proportional to 123,487.67, 170,420.86 and 75,734.53 is: 104,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.67 : 170,420.86 = 75,734.53 : x
  2. Step 2: Convert to fraction form
    123,487.67/170,420.86 = 75,734.53/x
  3. Step 3: Cross multiply
    123,487.67x = 170,420.86 × 75,734.53
  4. Step 4: Simplify right side
    123,487.67x = 12,906,743,402.91
  5. Step 5: Solve for x
    x = 12,906,743,402.91/123,487.67
  6. Step 6: Final answer
    x = 104,518.48

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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.