Home / 137,162.73-189,276.94-76,721.70

Finding the Fourth Proportional to 137,162.73, 189,276.94 and 76,721.70

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Solution

The fourth proportional to 137,162.73, 189,276.94 and 76,721.70 is: 105,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,162.73 : 189,276.94 = 76,721.70 : x
  2. Step 2: Convert to fraction form
    137,162.73/189,276.94 = 76,721.70/x
  3. Step 3: Cross multiply
    137,162.73x = 189,276.94 × 76,721.70
  4. Step 4: Simplify right side
    137,162.73x = 14,521,648,607.60
  5. Step 5: Solve for x
    x = 14,521,648,607.60/137,162.73
  6. Step 6: Final answer
    x = 105,871.68

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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.