Home / 123,214.80-170,004.12-72,200.14

Finding the Fourth Proportional to 123,214.80, 170,004.12 and 72,200.14

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Solution

The fourth proportional to 123,214.80, 170,004.12 and 72,200.14 is: 99,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,214.80 : 170,004.12 = 72,200.14 : x
  2. Step 2: Convert to fraction form
    123,214.80/170,004.12 = 72,200.14/x
  3. Step 3: Cross multiply
    123,214.80x = 170,004.12 × 72,200.14
  4. Step 4: Simplify right side
    123,214.80x = 12,274,321,525.09
  5. Step 5: Solve for x
    x = 12,274,321,525.09/123,214.80
  6. Step 6: Final answer
    x = 99,617.26

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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.