Home / 136,721.46-205,011.06-61,805.76

Finding the Fourth Proportional to 136,721.46, 205,011.06 and 61,805.76

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Solution

The fourth proportional to 136,721.46, 205,011.06 and 61,805.76 is: 92,676.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,721.46 : 205,011.06 = 61,805.76 : x
  2. Step 2: Convert to fraction form
    136,721.46/205,011.06 = 61,805.76/x
  3. Step 3: Cross multiply
    136,721.46x = 205,011.06 × 61,805.76
  4. Step 4: Simplify right side
    136,721.46x = 12,670,864,371.71
  5. Step 5: Solve for x
    x = 12,670,864,371.71/136,721.46
  6. Step 6: Final answer
    x = 92,676.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.