Home / 123,475.17-170,396.91-66,887.76

Finding the Fourth Proportional to 123,475.17, 170,396.91 and 66,887.76

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Solution

The fourth proportional to 123,475.17, 170,396.91 and 66,887.76 is: 92,305.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,475.17 : 170,396.91 = 66,887.76 : x
  2. Step 2: Convert to fraction form
    123,475.17/170,396.91 = 66,887.76/x
  3. Step 3: Cross multiply
    123,475.17x = 170,396.91 × 66,887.76
  4. Step 4: Simplify right side
    123,475.17x = 11,397,467,620.82
  5. Step 5: Solve for x
    x = 11,397,467,620.82/123,475.17
  6. Step 6: Final answer
    x = 92,305.75

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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.