Home / 123,417.28-170,315.83-66,828.66

Finding the Fourth Proportional to 123,417.28, 170,315.83 and 66,828.66

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Solution

The fourth proportional to 123,417.28, 170,315.83 and 66,828.66 is: 92,223.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,417.28 : 170,315.83 = 66,828.66 : x
  2. Step 2: Convert to fraction form
    123,417.28/170,315.83 = 66,828.66/x
  3. Step 3: Cross multiply
    123,417.28x = 170,315.83 × 66,828.66
  4. Step 4: Simplify right side
    123,417.28x = 11,381,978,695.69
  5. Step 5: Solve for x
    x = 11,381,978,695.69/123,417.28
  6. Step 6: Final answer
    x = 92,223.54

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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.