Home / 123,840.36-170,900.40-67,251.72

Finding the Fourth Proportional to 123,840.36, 170,900.40 and 67,251.72

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Solution

The fourth proportional to 123,840.36, 170,900.40 and 67,251.72 is: 92,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,840.36 : 170,900.40 = 67,251.72 : x
  2. Step 2: Convert to fraction form
    123,840.36/170,900.40 = 67,251.72/x
  3. Step 3: Cross multiply
    123,840.36x = 170,900.40 × 67,251.72
  4. Step 4: Simplify right side
    123,840.36x = 11,493,345,848.69
  5. Step 5: Solve for x
    x = 11,493,345,848.69/123,840.36
  6. Step 6: Final answer
    x = 92,807.76

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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.