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Finding the Fourth Proportional to 137,073.45, 189,160.73 and 76,644.10

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Solution

The fourth proportional to 137,073.45, 189,160.73 and 76,644.10 is: 105,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,073.45 : 189,160.73 = 76,644.10 : x
  2. Step 2: Convert to fraction form
    137,073.45/189,160.73 = 76,644.10/x
  3. Step 3: Cross multiply
    137,073.45x = 189,160.73 × 76,644.10
  4. Step 4: Simplify right side
    137,073.45x = 14,498,053,050.07
  5. Step 5: Solve for x
    x = 14,498,053,050.07/137,073.45
  6. Step 6: Final answer
    x = 105,768.50

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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.