Home / 123,276.28-170,115.24-72,282.16

Finding the Fourth Proportional to 123,276.28, 170,115.24 and 72,282.16

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Solution

The fourth proportional to 123,276.28, 170,115.24 and 72,282.16 is: 99,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,276.28 : 170,115.24 = 72,282.16 : x
  2. Step 2: Convert to fraction form
    123,276.28/170,115.24 = 72,282.16/x
  3. Step 3: Cross multiply
    123,276.28x = 170,115.24 × 72,282.16
  4. Step 4: Simplify right side
    123,276.28x = 12,296,296,996.12
  5. Step 5: Solve for x
    x = 12,296,296,996.12/123,276.28
  6. Step 6: Final answer
    x = 99,745.85

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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.