Home / 123,710.18-170,720.06-67,121.56

Finding the Fourth Proportional to 123,710.18, 170,720.06 and 67,121.56

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Solution

The fourth proportional to 123,710.18, 170,720.06 and 67,121.56 is: 92,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,710.18 : 170,720.06 = 67,121.56 : x
  2. Step 2: Convert to fraction form
    123,710.18/170,720.06 = 67,121.56/x
  3. Step 3: Cross multiply
    123,710.18x = 170,720.06 × 67,121.56
  4. Step 4: Simplify right side
    123,710.18x = 11,458,996,750.49
  5. Step 5: Solve for x
    x = 11,458,996,750.49/123,710.18
  6. Step 6: Final answer
    x = 92,627.76

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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.