Home / 123,342.45-170,212.68-66,753.87

Finding the Fourth Proportional to 123,342.45, 170,212.68 and 66,753.87

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Solution

The fourth proportional to 123,342.45, 170,212.68 and 66,753.87 is: 92,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,342.45 : 170,212.68 = 66,753.87 : x
  2. Step 2: Convert to fraction form
    123,342.45/170,212.68 = 66,753.87/x
  3. Step 3: Cross multiply
    123,342.45x = 170,212.68 × 66,753.87
  4. Step 4: Simplify right side
    123,342.45x = 11,362,355,113.07
  5. Step 5: Solve for x
    x = 11,362,355,113.07/123,342.45
  6. Step 6: Final answer
    x = 92,120.39

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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.