Home / 223,719.21-308,732.40-123,117.21

Finding the Fourth Proportional to 223,719.21, 308,732.40 and 123,117.21

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Solution

The fourth proportional to 223,719.21, 308,732.40 and 123,117.21 is: 169,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,719.21 : 308,732.40 = 123,117.21 : x
  2. Step 2: Convert to fraction form
    223,719.21/308,732.40 = 123,117.21/x
  3. Step 3: Cross multiply
    223,719.21x = 308,732.40 × 123,117.21
  4. Step 4: Simplify right side
    223,719.21x = 38,010,271,724.60
  5. Step 5: Solve for x
    x = 38,010,271,724.60/223,719.21
  6. Step 6: Final answer
    x = 169,901.69

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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.