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Finding the Fourth Proportional to 123,555.17, 170,504.29 and 69,838.30

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Solution

The fourth proportional to 123,555.17, 170,504.29 and 69,838.30 is: 96,375.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,555.17 : 170,504.29 = 69,838.30 : x
  2. Step 2: Convert to fraction form
    123,555.17/170,504.29 = 69,838.30/x
  3. Step 3: Cross multiply
    123,555.17x = 170,504.29 × 69,838.30
  4. Step 4: Simplify right side
    123,555.17x = 11,907,730,056.74
  5. Step 5: Solve for x
    x = 11,907,730,056.74/123,555.17
  6. Step 6: Final answer
    x = 96,375.81

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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.