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Finding the Fourth Proportional to 103,063.58, 155,297.39 and 84,753.74

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Solution

The fourth proportional to 103,063.58, 155,297.39 and 84,753.74 is: 127,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,063.58 : 155,297.39 = 84,753.74 : x
  2. Step 2: Convert to fraction form
    103,063.58/155,297.39 = 84,753.74/x
  3. Step 3: Cross multiply
    103,063.58x = 155,297.39 × 84,753.74
  4. Step 4: Simplify right side
    103,063.58x = 13,162,034,614.74
  5. Step 5: Solve for x
    x = 13,162,034,614.74/103,063.58
  6. Step 6: Final answer
    x = 127,707.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.