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Finding the Fourth Proportional to 123,718.79, 185,671.48 and 90,524.49

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Solution

The fourth proportional to 123,718.79, 185,671.48 and 90,524.49 is: 135,855.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,718.79 : 185,671.48 = 90,524.49 : x
  2. Step 2: Convert to fraction form
    123,718.79/185,671.48 = 90,524.49/x
  3. Step 3: Cross multiply
    123,718.79x = 185,671.48 × 90,524.49
  4. Step 4: Simplify right side
    123,718.79x = 16,807,816,034.55
  5. Step 5: Solve for x
    x = 16,807,816,034.55/123,718.79
  6. Step 6: Final answer
    x = 135,855.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.