Home / 123,225.92-170,039.13-90,977.66

Finding the Fourth Proportional to 123,225.92, 170,039.13 and 90,977.66

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Solution

The fourth proportional to 123,225.92, 170,039.13 and 90,977.66 is: 125,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,225.92 : 170,039.13 = 90,977.66 : x
  2. Step 2: Convert to fraction form
    123,225.92/170,039.13 = 90,977.66/x
  3. Step 3: Cross multiply
    123,225.92x = 170,039.13 × 90,977.66
  4. Step 4: Simplify right side
    123,225.92x = 15,469,762,155.84
  5. Step 5: Solve for x
    x = 15,469,762,155.84/123,225.92
  6. Step 6: Final answer
    x = 125,539.84

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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.