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Finding the Fourth Proportional to 223,689.09, 308,690.95 and 123,087.09

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Solution

The fourth proportional to 223,689.09, 308,690.95 and 123,087.09 is: 169,860.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,689.09 : 308,690.95 = 123,087.09 : x
  2. Step 2: Convert to fraction form
    223,689.09/308,690.95 = 123,087.09/x
  3. Step 3: Cross multiply
    223,689.09x = 308,690.95 × 123,087.09
  4. Step 4: Simplify right side
    223,689.09x = 37,995,871,825.50
  5. Step 5: Solve for x
    x = 37,995,871,825.50/223,689.09
  6. Step 6: Final answer
    x = 169,860.19

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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.