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Finding the Fourth Proportional to 123,220.71, 170,034.35 and 69,518.88

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Solution

The fourth proportional to 123,220.71, 170,034.35 and 69,518.88 is: 95,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,220.71 : 170,034.35 = 69,518.88 : x
  2. Step 2: Convert to fraction form
    123,220.71/170,034.35 = 69,518.88/x
  3. Step 3: Cross multiply
    123,220.71x = 170,034.35 × 69,518.88
  4. Step 4: Simplify right side
    123,220.71x = 11,820,597,225.93
  5. Step 5: Solve for x
    x = 11,820,597,225.93/123,220.71
  6. Step 6: Final answer
    x = 95,930.28

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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.