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Finding the Fourth Proportional to 123,190.66, 169,991.40 and 69,484.06

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Solution

The fourth proportional to 123,190.66, 169,991.40 and 69,484.06 is: 95,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,190.66 : 169,991.40 = 69,484.06 : x
  2. Step 2: Convert to fraction form
    123,190.66/169,991.40 = 69,484.06/x
  3. Step 3: Cross multiply
    123,190.66x = 169,991.40 × 69,484.06
  4. Step 4: Simplify right side
    123,190.66x = 11,811,692,637.08
  5. Step 5: Solve for x
    x = 11,811,692,637.08/123,190.66
  6. Step 6: Final answer
    x = 95,881.40

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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.