Home / 281,654.23-422,482.17-81,979.51

Finding the Fourth Proportional to 281,654.23, 422,482.17 and 81,979.51

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Solution

The fourth proportional to 281,654.23, 422,482.17 and 81,979.51 is: 122,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,654.23 : 422,482.17 = 81,979.51 : x
  2. Step 2: Convert to fraction form
    281,654.23/422,482.17 = 81,979.51/x
  3. Step 3: Cross multiply
    281,654.23x = 422,482.17 × 81,979.51
  4. Step 4: Simplify right side
    281,654.23x = 34,634,881,280.34
  5. Step 5: Solve for x
    x = 34,634,881,280.34/281,654.23
  6. Step 6: Final answer
    x = 122,969.51

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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.