Home / 119,073.82-164,330.10-78,717.61

Finding the Fourth Proportional to 119,073.82, 164,330.10 and 78,717.61

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Solution

The fourth proportional to 119,073.82, 164,330.10 and 78,717.61 is: 108,635.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,073.82 : 164,330.10 = 78,717.61 : x
  2. Step 2: Convert to fraction form
    119,073.82/164,330.10 = 78,717.61/x
  3. Step 3: Cross multiply
    119,073.82x = 164,330.10 × 78,717.61
  4. Step 4: Simplify right side
    119,073.82x = 12,935,672,723.06
  5. Step 5: Solve for x
    x = 12,935,672,723.06/119,073.82
  6. Step 6: Final answer
    x = 108,635.74

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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.