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Finding the Fourth Proportional to 112,269.84, 154,865.16 and 82,018.20

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Solution

The fourth proportional to 112,269.84, 154,865.16 and 82,018.20 is: 113,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,269.84 : 154,865.16 = 82,018.20 : x
  2. Step 2: Convert to fraction form
    112,269.84/154,865.16 = 82,018.20/x
  3. Step 3: Cross multiply
    112,269.84x = 154,865.16 × 82,018.20
  4. Step 4: Simplify right side
    112,269.84x = 12,701,761,665.91
  5. Step 5: Solve for x
    x = 12,701,761,665.91/112,269.84
  6. Step 6: Final answer
    x = 113,136.01

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1.5x scale

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.