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Finding the Fourth Proportional to 123,202.37, 169,987.14 and 72,187.70

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Solution

The fourth proportional to 123,202.37, 169,987.14 and 72,187.70 is: 99,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,202.37 : 169,987.14 = 72,187.70 : x
  2. Step 2: Convert to fraction form
    123,202.37/169,987.14 = 72,187.70/x
  3. Step 3: Cross multiply
    123,202.37x = 169,987.14 × 72,187.70
  4. Step 4: Simplify right side
    123,202.37x = 12,270,979,758.02
  5. Step 5: Solve for x
    x = 12,270,979,758.02/123,202.37
  6. Step 6: Final answer
    x = 99,600.19

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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.