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Finding the Fourth Proportional to 137,314.91, 189,486.21 and 76,057.47

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Solution

The fourth proportional to 137,314.91, 189,486.21 and 76,057.47 is: 104,954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,314.91 : 189,486.21 = 76,057.47 : x
  2. Step 2: Convert to fraction form
    137,314.91/189,486.21 = 76,057.47/x
  3. Step 3: Cross multiply
    137,314.91x = 189,486.21 × 76,057.47
  4. Step 4: Simplify right side
    137,314.91x = 14,411,842,017.70
  5. Step 5: Solve for x
    x = 14,411,842,017.70/137,314.91
  6. Step 6: Final answer
    x = 104,954.68

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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.