Home / 123,427.20-170,330.16-66,838.80

Finding the Fourth Proportional to 123,427.20, 170,330.16 and 66,838.80

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Solution

The fourth proportional to 123,427.20, 170,330.16 and 66,838.80 is: 92,237.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,427.20 : 170,330.16 = 66,838.80 : x
  2. Step 2: Convert to fraction form
    123,427.20/170,330.16 = 66,838.80/x
  3. Step 3: Cross multiply
    123,427.20x = 170,330.16 × 66,838.80
  4. Step 4: Simplify right side
    123,427.20x = 11,384,663,498.21
  5. Step 5: Solve for x
    x = 11,384,663,498.21/123,427.20
  6. Step 6: Final answer
    x = 92,237.88

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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.