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Finding the Fourth Proportional to 123,796.40, 170,838.56 and 67,207.76

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Solution

The fourth proportional to 123,796.40, 170,838.56 and 67,207.76 is: 92,746.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,796.40 : 170,838.56 = 67,207.76 : x
  2. Step 2: Convert to fraction form
    123,796.40/170,838.56 = 67,207.76/x
  3. Step 3: Cross multiply
    123,796.40x = 170,838.56 × 67,207.76
  4. Step 4: Simplify right side
    123,796.40x = 11,481,676,939.23
  5. Step 5: Solve for x
    x = 11,481,676,939.23/123,796.40
  6. Step 6: Final answer
    x = 92,746.45

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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.