Home / 123,395.40-170,285.70-66,806.82

Finding the Fourth Proportional to 123,395.40, 170,285.70 and 66,806.82

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Solution

The fourth proportional to 123,395.40, 170,285.70 and 66,806.82 is: 92,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.40 : 170,285.70 = 66,806.82 : x
  2. Step 2: Convert to fraction form
    123,395.40/170,285.70 = 66,806.82/x
  3. Step 3: Cross multiply
    123,395.40x = 170,285.70 × 66,806.82
  4. Step 4: Simplify right side
    123,395.40x = 11,376,246,108.47
  5. Step 5: Solve for x
    x = 11,376,246,108.47/123,395.40
  6. Step 6: Final answer
    x = 92,193.44

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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.