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Finding the Fourth Proportional to 123,706.84, 170,714.70 and 67,117

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Solution

The fourth proportional to 123,706.84, 170,714.70 and 67,117 is: 92,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,706.84 : 170,714.70 = 67,117 : x
  2. Step 2: Convert to fraction form
    123,706.84/170,714.70 = 67,117/x
  3. Step 3: Cross multiply
    123,706.84x = 170,714.70 × 67,117
  4. Step 4: Simplify right side
    123,706.84x = 11,457,858,519.90
  5. Step 5: Solve for x
    x = 11,457,858,519.90/123,706.84
  6. Step 6: Final answer
    x = 92,621.06

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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.