Home / 123,219.44-170,010.50-72,204.78

Finding the Fourth Proportional to 123,219.44, 170,010.50 and 72,204.78

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Solution

The fourth proportional to 123,219.44, 170,010.50 and 72,204.78 is: 99,623.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,219.44 : 170,010.50 = 72,204.78 : x
  2. Step 2: Convert to fraction form
    123,219.44/170,010.50 = 72,204.78/x
  3. Step 3: Cross multiply
    123,219.44x = 170,010.50 × 72,204.78
  4. Step 4: Simplify right side
    123,219.44x = 12,275,570,750.19
  5. Step 5: Solve for x
    x = 12,275,570,750.19/123,219.44
  6. Step 6: Final answer
    x = 99,623.65

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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.