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Finding the Fourth Proportional to 123,893.70, 170,973.51 and 67,305.12

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Solution

The fourth proportional to 123,893.70, 170,973.51 and 67,305.12 is: 92,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,893.70 : 170,973.51 = 67,305.12 : x
  2. Step 2: Convert to fraction form
    123,893.70/170,973.51 = 67,305.12/x
  3. Step 3: Cross multiply
    123,893.70x = 170,973.51 × 67,305.12
  4. Step 4: Simplify right side
    123,893.70x = 11,507,392,607.37
  5. Step 5: Solve for x
    x = 11,507,392,607.37/123,893.70
  6. Step 6: Final answer
    x = 92,881.18

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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.