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Finding the Fourth Proportional to 123,081, 183,655.44 and 115,557.72

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Solution

The fourth proportional to 123,081, 183,655.44 and 115,557.72 is: 172,429.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,081 : 183,655.44 = 115,557.72 : x
  2. Step 2: Convert to fraction form
    123,081/183,655.44 = 115,557.72/x
  3. Step 3: Cross multiply
    123,081x = 183,655.44 × 115,557.72
  4. Step 4: Simplify right side
    123,081x = 21,222,803,912.00
  5. Step 5: Solve for x
    x = 21,222,803,912.00/123,081
  6. Step 6: Final answer
    x = 172,429.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.