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Finding the Fourth Proportional to 137,801.60, 189,772.45 and 124,072.71

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Solution

The fourth proportional to 137,801.60, 189,772.45 and 124,072.71 is: 170,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,801.60 : 189,772.45 = 124,072.71 : x
  2. Step 2: Convert to fraction form
    137,801.60/189,772.45 = 124,072.71/x
  3. Step 3: Cross multiply
    137,801.60x = 189,772.45 × 124,072.71
  4. Step 4: Simplify right side
    137,801.60x = 23,545,581,844.66
  5. Step 5: Solve for x
    x = 23,545,581,844.66/137,801.60
  6. Step 6: Final answer
    x = 170,865.81

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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.