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Finding the Fourth Proportional to 137,551.74, 189,855.14 and 83,866.34

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Solution

The fourth proportional to 137,551.74, 189,855.14 and 83,866.34 is: 115,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,551.74 : 189,855.14 = 83,866.34 : x
  2. Step 2: Convert to fraction form
    137,551.74/189,855.14 = 83,866.34/x
  3. Step 3: Cross multiply
    137,551.74x = 189,855.14 × 83,866.34
  4. Step 4: Simplify right side
    137,551.74x = 15,922,454,353.38
  5. Step 5: Solve for x
    x = 15,922,454,353.38/137,551.74
  6. Step 6: Final answer
    x = 115,756.11

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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.