Home / 131,929.74-182,031.32-78,227.96

Finding the Fourth Proportional to 131,929.74, 182,031.32 and 78,227.96

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Solution

The fourth proportional to 131,929.74, 182,031.32 and 78,227.96 is: 107,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,929.74 : 182,031.32 = 78,227.96 : x
  2. Step 2: Convert to fraction form
    131,929.74/182,031.32 = 78,227.96/x
  3. Step 3: Cross multiply
    131,929.74x = 182,031.32 × 78,227.96
  4. Step 4: Simplify right side
    131,929.74x = 14,239,938,819.71
  5. Step 5: Solve for x
    x = 14,239,938,819.71/131,929.74
  6. Step 6: Final answer
    x = 107,935.78

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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.