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Finding the Fourth Proportional to 123,003.70, 169,768.65 and 72,027.70

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Solution

The fourth proportional to 123,003.70, 169,768.65 and 72,027.70 is: 99,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,003.70 : 169,768.65 = 72,027.70 : x
  2. Step 2: Convert to fraction form
    123,003.70/169,768.65 = 72,027.70/x
  3. Step 3: Cross multiply
    123,003.70x = 169,768.65 × 72,027.70
  4. Step 4: Simplify right side
    123,003.70x = 12,228,045,391.61
  5. Step 5: Solve for x
    x = 12,228,045,391.61/123,003.70
  6. Step 6: Final answer
    x = 99,412.01

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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.